From the sounds of things, this is a problem with your connection. IIRC, you said you had 128K DSL, which probably has something like 64K upload capacity. Considering the network overhead, it's not surprising access to other sites is incredibly slow.
64K upload is a grand total of like 6-7K in actual upload bandwidth, most of which is probably eaten up by the ACK packets for the file transfer. It's just a symptom of low upload bandwidth and there's really not a lot you can do. If you can find a software packet shaping program, you might be able to prioritize HTTP packets over other things, but you might find such a program would use a lot of CPU power and cost a pretty penny.
I have a strange problem which is the same in both browser, IE and Firefox.I can't browse while I download.It doesn't matter if the file is 500k or bigger. I can't acess another site ( if it does is painfully slow)until the download is completed.I download 1 file only at a time and don't use P2P.Other than that I have no speed problem.I'm using Firefox as default but I tried
IE and get the same results, so I don't think is a browser problem.I have adware se, spyboot, symantec antivirus and zone alarm standard edition all updated.
I run win xp home with sp1.I disable Zone alarm for test purpose but no improvement. Any sugestion would be great appreciated.
Thank you for your time.