so when the download stops, are you able to still browse the net? Do you have wireless router?
I get a similar thing but it's because my usb wireless adapter gets hot and it'll stop any downloads or browsing. When I turn on the a/c, things get back to normal.
firstname.lastname@example.org 24/7 w/stock cooling. 2g Transcend Memory
3 hd's, 80-XP Pro, 500 and 320-Apps,Pics, Music, Videos
ATI Radeon HD 3450 512MB-I DON'T GAME!
Ultra PS, Ultra Mid Tower Case
Lite-on internal DVD-R, Samsung Lite-Scribe Ext. DVD-R
2 Acer 19" widescreen LCD's. For HTPC Olevia 32" LCD