...this morning, my machine started pausing with "Waiting for Memory" message...after a short period (30 or 40 seconds), crunching would resume...plenty of memory available (700 or 800 meg)...

i watched the pattern for a half-hour or so on Task Manager...and then i realized that the pattern was much too regular...okay - probably overheating...

shut down, removed fan, and removed dust/lint/cat fur
from heat sink...re-started, and everything is back to normal...

frank