I've DL Xolox 1.18 Beta 3 and had it running. But when i'm downloading files, after 15 minutes or so, my computer crashes and it does that all the time.

I have a Compaq AMD-k7, 500 MHZ, 64 MB RAM (I know, not the newest computer).

Can someone help me? Can somebody give me advice, besides buying a new computer?

Thanks!