Dell PowerEdge 4400 and SP4

I was one of those less fortunate folks who destroyed my
server with SP4. I was wondering when it will be safe to
install SP4 and if there's been a fix for this yet.

More detailed info is that I have a Dell PowerEdge 4400
running Windows 2000 Terminal Services. When SP4 was
released I installed like the good admin that I am. After
SP4 AD was destroyed and no one could log on locally or
other.

Dell claims it was a conflict with the PERC3Di controller
or Array Manager. Array Manager has been removed from the
mix but I can't take any chances.

Any Suggestions to getting my server up to date?

Thanks
ADL