Uploading files to the internet problem?

[J]

Sounds like your browser is picking up a virus in the form of a cookie. If your not using mozilla firefox, you should try it. It has the option to disable tracking cookies. This can be access under edit--preferences--privacy tab--tell sites i don't want to be tracked. Also you might want to select the option to never remember history under the location listed above. Finally, I recommend installing the adblock plus add-on for firefox in case the virus is some kind of adware.