All Browsers having issues Uploading Files?

I was uploading a picture to Facebook when my Firefox crashed. I tried Chrome, IE, Dragon, all the same thing. So, I was due to factory reset anyway since I do it every 4 months. Once that was done, no problems, install the Post-SP1 updates, and the problem starts again. I thought it was just Facebook, but it's multiple sites, Mediafire, Turntable, Facebook.

Has anyone else had this issue and isolated the update that's causing the problems

I have not had that problem exactly but I had something that sort of sounds like it. It turned out that the anti-virus was scanning the file that I was uploading and the browser was basically timing out waiting for the av to finish the scan. (This could possibly be a problem with a firewall too.) One of the only differences is that it only starts after the post SP1 patches, weird.