Well, at least they admit that their information might be a bit sketchy.
This is a direct quote from their page on reports of possible electronic interference
http://asrs.arc.nasa.gov/report_sets_nf.htm
“A sampling of reports referencing avionics problems that may result from the influence of passenger electronic devices.” (bolding mine)
Inside this link we find these gems.
“All ASRS reports are voluntarily submitted, and thus cannot be considered a measured random sample of the full population of like events”
“Moreover, not all pilots, controllers, air carriers, or other participants in the aviation system, are equally aware of the ASRS or equally willing to report to us. Thus, the data, reflect reporting biases. There biases, which are not fully known or measurable, may influence ASRS statistics.” (their bolding, not mine)
The first two events, as well as the 5th, 7th, 9th, 10th, and 11th have nothing to do with possible use of electronic devices causing issues. The third lists it as a suspicion, but gives no evidence at all. The fourth stats a passenger was using a palm, but even the pilot states he cannot prove the palm was the cause. The sixth lists a cell phone as a possible cause for concern, but offers no evidence. The eight stats a woman was using a cell phone when pulling up to the gate, but again offers no evidence it caused the in flight problems.
There are about 100 reports listed. I read the first 11 and did not see any compelling arguments for electronic devices being the direct cause of in flight issues. If you’re going to offer something as a cite, please save us the work of having to look it up for you. If it is going to be this much information, please at least tell us where to look inside these 100 page reports to find the information you believes supports your claim.