[ham90mack]

I had a Belkin wireless router that I got for free and it worked fine for a few years. Then one day I decided to upload a 700 MB video (I don't think it was through FTP, but it could have been). Half way through the router failed and stopped the upload. After restarting the router and trying again, I discovered that somehow it was only able to upload 500 MB through the cable modem before needing to restart. I had never uploaded anything that big before. This problem was very annoying because downloads were unlimited (I have downloaded gigabytes of information without needing to restart it) and file sharing between computers never caused any problems (even more gigabytes were transferred between computers). In the end, I had to get a new router (Buffalo, and it wasn't free this time) and I was able to upload the entire video. At least now I have a router that can make a portable LAN when I need one...

So your problem could very well be the router.

Oh, and the router did not have a firmware update available. In fact, I don't even remember seeing an update page because the router was so old.