Logout and shutting down from Winxp ultra-slow. 70 sec or blocked

[europanorama]

In Winxp after a security-run with AVG, Malwarebytes, Adwcleaner JRT i encountered a sudden blocking of logout from the accounts.
maybe with an additional combination of Ctrl + Alt + Delete will finally trigger that, maybe also with alt + f4.
I can switch between accounts.
but i must wait long 70 secs. sometimes i am pressing quickly soft-shutdown-button to trigger.
tried a lot and altered registry. will show that site since i dont know for all settings which is default. and running a program.
nothing helped.
yes defraggler had been done 10 days ago or 8. swapfile is fine.
at least i have a not so old backup of systempartition.
malwarebytes will now run. avg didtn find anything serious.
maybe the reason for all this that i simply deleted what adwcleaber had found and didnt check that beforehand.
Thanks. Yes i will switch to Win7 in the next weeks.....on other drive.
update: i did a repair-installation with SP2-cd. sp3 installed afterwards and videodriver installed.
outlook seems not working, cannot send.
search-assistant is also gone. i dont have the drives indexed. at least not C: thats why search normally only working with the assistant.
have some open question which avg will answer soon regarding hidden report-file. thus the search which didnt find with windows search i have now.