The most common cause of crashes is non-compliant drivers.
Second most common is infection by various malware products.
Third would be faulty or failing hardware.
Fourth would be software issues, meaing programs that are not intended for
use in Vista.
Why is yours crashing? I don't know as you've given no information that
gives any clues to the problem. Vista itself is very stable, I have several
installations running 24/7 since release that have never crashed (unless I
intended to force them to in order to duplicate a customer issue).
Don't use the parental controls so I can't help you with them. For me the
best parental controls are accomplished by actually being a parent and not
relying on a machine to do it.
--
Best of Luck,
Rick Rogers, aka "Nutcase" - Microsoft MVP
Windows help -
www.rickrogers.org
My thoughts
http://rick-mvp.blogspot.com