Networking of something Else?

[Kryptiv 0]

Hey I'm having trouble with uploading things to any where, my computer lags really bad. Imageshack, photobucket, my ftp server all lag my computer out. And its not like I'm uploading huge files I talking 300kb or less does it. I went to speakeasy.net and during the upload test it freezes 95% of the time. When it does give me a score its like 9. The weird thing it was fine about a month ago, I uploaded a 25mb file to my ftp site and no prob at all. So is there something I can check or is it my cable company or what? Any help would be most appreaciated. Thx