Something strange is happening with the JavaScript on my project. It works perfectly fine, except when accessed from computers at a specific company. Even more puzzling is that the JavaScript only fails about half of the time when accessed from that company. This issue occurs across FireFox, Chrome, and IE.
I conducted tests using FireFox and Chrome on a thumb drive and found that they always display my project site flawlessly, except when accessed from a computer within that company's network where they fail at the same rate as the installed browsers.
The JavaScript on my project uses jQuery and makes Ajax calls. The failures seem to be happening during these Ajax calls. To try and pinpoint the problem, I implemented a logging function for my Ajax calls to track success versus failure. Interestingly, over one month, there were very few failures (about 1%) from all access points except this particular company. Strangely, the Ajax calls in the logging function are not failing.
There doesn't seem to be anything unusual - just Win XP SP3. There have been no other abnormalities noted in their network behavior. This company is part of a major ISP division and operates on their corporate network.
If you have any suggestions for troubleshooting, they would be greatly appreciated.