I’m having a problem (more like a niggle really) with Firefox at the moment - I can’t always use the middle mouse button to open a new tab when I click on a link.
For example, on most message boards (including this one) I can open a new tab by clicking the middle button on threads with no new posts in them, but not on threads without new posts in them, ie. they’re in bold type.
There are other instances when I can’t open a new tab using the middle button, but the new posts on a messageboard is the example that is easy to see what’s happening.