windows xp problem with Windows Explorer

Archived from groups: microsoft.public.windowsxp.perform_maintain (More info?)

Hello:

i' use windows XP professional. recently, I've encounter a very strange
problem with my windows XP:

whenever you open up a window explorer and close it, it will freeses the
whole thing for 10 seconds, then the whole desktop refreshes( ie the desktop
turns blue, will all icons on it disappearing and then reappears.)

this happened to me when I log in as an administrator, all the time, without
exception but had never happend with another (second) login name prior to
yesterady. I don't mind this because I rarely log in as an admin. but
starting from yesterday, after I've got a message "you re running low in
memory" from windows, this starts happening too to the 2nd log in name. "the
memory low" message happened when I logged in using my 2nd login name and was
buring a dvd. at that time, my hard drive was low in space too. so I deleted
some unused files (safe files only) .

I defregged, restarted, but in vain, it happens almost all the time. I was
curious why it happened so at first with my 1 st login name, and now with my
second login name too.

any hint? I don't download anything to this computer at all.