- Inability to connect to terminal servers or to file share access.
- Failure of domain controller replication across WAN links.
- Inability of Microsoft Exchange servers to connect to domain controllers.
Appearantly MS05-019 will be rereleased with a fix to the problem - I havent received any info on what happens to SP1.
Update - Microsoft has published a Security Advisory with further info and it states that the fix will be rereleased in June 2005.
You can find the KB article with more info here.