Downloads hang

I wasn't really sure where to put this, as it's related to internet

downloads, but not just to IE.

The problem I am getting is that downloads of any largish files (>1MB),

either via IE7 (includes trying to view streaming video or file downloads),

Windows Media Player or Outlook 2003 (i.e. files attached in e-mails), get to

a point & then just hang. Outlook times out, but IE & WMP just sit there.

This even effects YouTube!

I am running XP Pro, with SP2, on an AMD Athlon 4000 laptop, with 1GB RAM,

so performance is not an issue. I have several other machines that connect

through the same network without any problems.

Any ideas