Upload giltches using any browser, any site.

Okay, so I did a quick Google search and it was obvious that I wasn't the only one having this issue, but no fix had been found yet, as far as I know - I'm hoping the intelligent fellows here at Tom's Hardware could be the first! (:

So the problem is as follows: Ever since I upgraded my Inspiron 530 to Windows 7 Professional from Vista Basic (I did a format + clean install), I've been having upload problems to almost all sites. Three days ago, I tried uploading a 70MB file to Mediafire, and the progress bar went instantly to 100% and just stalled with no other activity. I thought there was something wrong with Mediafire, so I decided to try FileQube. Same exact problem. I decided to just try it on my Macbook Pro and the upload worked flawlessly for both Mediafire and FileQube. I had a lot of things I needed to get done that day so I just decided to call it a day and troubleshoot it later. I forgot all about it.

Today, I tried uploading around 60 photos onto Facebook. The problem persisted - the progress bar would go instantly to 100% and then stall. The first time it failed, but I tried to upload the files again. Again, it went to 100% in a near instantaneous fashion. I decided to wait it out, hoping that it was just a progress bar glitch and that it was actually still uploading (but just not displaying it). Sure enough, I got a dialog box that read "Upload successful!". When I viewed the photographs that I uploaded, they were all glitched and blocky, with the colors all odd - there was obviously a corruption of some sorts going on. Again, I resorted to transferring the files over to my Mac and uploading it from there. It worked fine.

Windows 7 has been fantastic - this is my only issue with it. I was hoping with your guys' help, I could get my system working flawlessly!

Thanks in advance!

Uploading via FTP is fine (I recently updated my portfolio using FileZilla). I think the problem persists using IE.

Oh, sorry for not making it clear in the first post - I'm using FF right now. I tried using IE after Braxton's suggestion and it still didn't work, which is why I said "I think the problem persists using IE". My bad!