Win 2003 SP1 play well with TS 6.5?

System

The subject of this post pretty much says it all, but I'm always resistant to agreeing to one of Microsoft's brilliant service packs but I'm getting more and more **** for it now. So, has anyone really encountered problems with Windows 2003 SP1 with TS 6.5 (no SP)?

Dave

Environments:
(1,2) TS6.5, TS6.5SP1 on W2K3
(3) Vignette V7 Portal on Solaris 9