Does anyone have any idea as to why running Limewire results in my Mac OS X v.10.4.7 shutting down randomly? It's very confusing, and I'm worried it may be doing damage to the computer. Usually every two hours or so - sometimes more and sometimes less- the whole thing just switches right off. When I reboot, the date on the computer ends up as Jan 1, 1970.

Any help would be greatly appreciated!