I get locked up sometimes too and have 384MB of physical RAM and have my virtual memory set to 800-1,000 MB. But I get locked up starting it, think it's more of a "I'm an old computer, leave me alone, go get one of those nice young new computers and let me sleep" sort of problems
Red bellows of flame have blackened my stones
Convulsing my frame and cracking my bones
Hell's dragons of steel who roar in their chains
Crawl into my caves to suck out my veins.....
-The Mountain P.F.M.