I wish I could find a bookmark about this, but I can’t.
When SP4 for Win2K came out originally, there were some reported problems with SQL Server. I run SQL Server 2000, and this is why I noticed it. I did not roll out SP4 on my SQL boxes until I was able to test it for a couple weeks, and did not see any problems. Then I upgraded my production boxes.
Everything worked ok.
But, I was real cautious when I did the upgrade. I stopped all SQL Server processes, turned off anti-virus software, then did the SP install from the Add/Remove Programs applet.
So, what issues are you seeing, or are you just checking before you roll out SP4?