Anything else in that list where the "00" number is going up and down?
ok, if the virtual mem is reset and the startup list has been adjusted use it normaly and watch for a reoccurrence.
If it is still happening but not as often there is probably a program that is having "memory leak". Uninstall and reinstall of the program usually fixes the problem. Identifying the program that is causing it is the key.
Ping me if somthing blows up...
svchost.exe - between 0-1
taskmgr.exe - between 0-1
System Idle Process - - between 94-99
ACD35E.exe - between 0-1
Explorer.exe - between 0-1
cidaemon.exe - between 0-1
iexplorer.exe - between 0-1