Google “leechblock”
You sound like me 10 years ago, and for periods of my life ever since. It wasn’t always the internet – video games, basic cable. Doesn’t matter. I still fall into the same rut if I’m travelling and I have too much time on my hand.
One thing that helps is having too much to do. If I only have 45 minutes to do the dishes and pick up the house, it’ll get done. If I come home from work and I have 8 hours to do 45 minutes of work, I’ll fart around on the internet for 7 hours, then procrastinate for another 4 hours (momentum is a bitch), go to bed late, and wake up with the dishes still not done. It’s ridiculous. I’ve got to keep busy to avoid this rut, which is hard, because I love sitting on my ass so very much. Having kids is really the only thing that I’d say “cured” me, but I’m sure if they went away I’d fall right back into old habits.
Anyway, I tried every method to disable my computer and/or make the internet not work, and I’d either replace it with TV or other stupid shit, or defeat my own blocks.
Stay busy. It keeps you motivated. Best advice I can give.
STEP ONE: Do Not Turn On Computer
STEP TWO: Profit
Do you hate your job?
Are you worn out?
What are you looking at on the net?
Are you lonely?
I would look into yourself and figure out what is making you do this.
Maybe a coffee around 3pm is all you need.
Maybe dating women and going out.
Maybe your job is too draining.
I don’t know if this helps, but I put my bicycle in front of my computer, by the front door, to remind myself that there is a world outside. It works often enough. Of course, after my bike rides, I am right back on the computer.
I go by the reward system.
When I get home from work I take care of all my chores first, then play. This is especially true when I get home for the weekend. I do all the big stuff like luandry, grocery shopping, ect…
I’m lazy to the bone. I get home on the weekend and take care of all that crap first. Then the rest of the weekend I can be a total lazy ass guilt free.
Boredom and loneliness are closely related Gestalt, and both are passive, emotional states with links to our physiology.
Be aware of that when you’re feeling these emotions; notice how you’re slumped, your breathing is slow and shallow, your chin is lowered - specifics like that. Change it. Straighten up, bring your shoulders back, breathe more deeply and a little faster, point your chin forward. Physically you are now more “ready for action” rather than sinking lower into a muddy puddle of present time, which seems so endless and static.
Realise too, that labelling tasks as ‘boring’ is a habitual process for moving away from outcomes (a tidy home, your degree, being with people etc); its playmates are annoyance, self-pity and apathy - and you’re probably reasonably familiar with them all right now. None of these feelings are ‘bad’ - they’re simply not useful in the context of you wanting to get things done.
Tasks you previously considered ‘boring’ are now ones of ‘pleasurable anticipation’ - and it’s feeling better for you already, isn’t it?
Get dial up internet. Seriously, last year I moved to a location where neither DSL or cable was available (and satellite is suuuuper expensive). I find myself not using the computer as much because it takes forever to load anything and I am often booted off the internet. It’s stable enough to get some stuff done, like email and reading the Straight Dope for a little bit, but I get too frustrated with the speed and being booted to continue using it for long. An added bonus is that I can often do little chores while I am waiting for stuff to load.
Getting rid of your wireless router is a good idea too, but you might end up still spending a lot of time on the internet, just tethered to a wall.
Maybe don’t go home so early? Stay out after work and go for long walks, join a gym or a club.
At the weekends arrange to meet a friend early on Saturday to get you up and out of the house.
Sunday, shmunday, we all need some ‘me time’. 
Edit to add: And thanks for this thread, you’ve got me off my bum and doing something!
I have a similar problem. And it’s definitely related to the need to fill my mind and time with something other than things I’d rather not think about (homesickness for my former hometown, impending job loss, etc).
One thing that helps me is to unplug it. Then when the battery dies, I’m done. This works best if I’ve put the power cord in another room. Then, when the battery dies, my rule to myself is: I MUST get up and do something. I’ll often use the “10 minute rule”. That is, I’ll commit to a chore for at least 10 minutes, often after that, I’ll feel like continuing on, but if not, I’ll allow myself to get back on the internet if I just can NOT stand it.
Part of the reason I do this (maybe you’re reasons are similar) is that it feels as if I’m always working, or doing chores, or something “responsible” and it feels as if I never get “enough” fun time or entertainment, so I’ll frequently over-indulge.
Also, when I have to get up to go to the bathroom, or get a drink of water or fix a meal, I’ll make myself do chores then, a lot of times it works and I’ll manage to get a few hours of chores in. For instance, when you’re cooking is a great time to put away dishes from the dishwasher, since you have to be standing there making sure things aren’t going to burn anyway.
Give yourself “non-internet” rewards.
That’s all I got…sorry.
My main thought is you shouldnt be asking folks on the internet for ideas on how to stop wasting time on the internet - thats irony at its finest.
based on your OP - you’ve installed software to help, then actively looked for ways to defeat it - all these other ideas on this thread will fail as well (tethering, etc).
Sounds like typical addictive behaviour to me - and it will take some steps to get around it - if you have someone else in the house that you trust, you could allow them to set ‘rules’ on the router to prevent you from traveling to the biggest time wasters or sites you want to wstop seeing - have them set and control the password - but thats just another idea that something else blocks you.
What you have to do is actively seek to change the behaviour - ‘for now i will not surf - I will surf for x time at x hour’ and then try to do that - each day you do it, the next day will get easier. And realize that a slip back is not the end of the world - just start again.
Focus on success, not the problem.
What about making the alternatives more enjoyable, at least to the extent you can? My DH has far less trouble now with general chores because he loads his iPod up with podcasts, and it’s the only time he listens to them.
Studying could maybe be improved with a good cup of tea, or other beverage of your choice, and some music?
The 10 minute rule is a good one in our house too, to get over the inertia and get started on something.
What you need to do is make a plan!
Seriously, I am very organized but it really comes from the fact that I have a plan and I achieve it (at minimum).
So, how much studying do you have to do? How long can you study on one stretch? Try to schedule those things in.
If you MUST go to the internet on your breaks, get an egg timer (and place it out of reach) once it goes off, your time for that break is up (you can also use this to remind you to take breaks).
I agree that it’s a good idea to save the surfing for after the chores.
One thing I tried, a few years back, was to have two separate accounts, one for productive stuff and one with access to the typical time-wasting sites. The time-wasting account would lock out at 11:00 PM. I gave up on that approach after a few months.
I suggest you examine what you’re doing on the Net, and think about why you’re spending so much time on it. If you don’t really know, you can easily get software that will monitor your screen and take a screen grab every 5 minutes (IrfanView can do that). Then you can review where you spent your time.
A purely fictional list:
- SDMB: 1 hour
- Banking: 5 minutes
- TVTropes: 90 minutes
- News: 6 minutes
- Surfing for new, never-before-seen naked humans: 5 hours
Then maybe you can start being more effective at the stuff that takes too much time.
Why the hell people think like this “It’s constant enough to get some things done, like e-mail and studying the Immediately Dope for a little bit, but I get too disappointed with the rate and being kicked to proceed using it for lengthy”. I don’t think so this kind of ideas could work for you.