I have been running WinXP and Xolox continually for about a week now. I get the odd error message after leaving for more than four hours or so (this could have do to with going into suspend mode). If I quite Xolox and relaunch it then both the uploads and downloads seems to resume where it left off.

I have downloaded several files that were in and around the 1GB mark and have had no troubles.

One thing I did notice was if I set my upload rate to the highest number (12) then the CPU usage did get rather annoyingly high. It seems to happen less at 11 and it seems to run perfectly at 10 (or lower). Of course the default here is only 3 so you can image that it should run perfectly for most users who don't change this setting.

Athlon 900, 128MB RAM, WinXP, Cable Modem