I have a really big problem with upload speed on my desktop.
I have an ADSL connection in my flat, and I have added wireless router to make easier access for my laptop. My desktop computer was connected with a cable to that wireless router and he was the one which have started causing problems. When I wanted to connect to my Gmail or Yahoo page to log in, it wouldn't open them. Any operation which requires some upload from my desktop computer wouldn't be done.
I wanted to make sure, so I made a speed test, and downloads were determined without problem, but the upload test wouldn't even start. Then I attached the same cable to my laptop and did the speedtest and everything went fine. So, I thought that my integrated LAN card was the one making problems. I bought a wireless card and installed it and the problem was still the same! Download OK, but upload couldn't be determined.
Before that, I have tried switching off the firewall, reinstalled my browsers several times, have reset the options in BIOS to default, etc., without any progress.
The only thing that I noticed was that it was possible to log in to Gmail from gtalk nothing else. Even with this question, I was forced to send it from my laptop.