New Engine update problems

Hello,
I updated the engine today and afterwards I have had nothing but problems. The computer freezes up to the point I have to shut down and restart. But then it freezes up again. I went to delete it from my system and it was so corrupted that the buttons and fonts were all jumbled with some missing. I had to go into safe mode to delete it.
I have been an Avast fan for years. I hope this is a problem you are aware of and fixing.
My system is an XP
Thanks,
Parmour

try re-installing avast.

remove using instruction here: www.avast.com/unintall-utility

download and re-install avast using avast.com

Correct Website for removal of avast!:

http://www.avast.com/uninstall-utility