I have an SBS2008 Server with Exchange 2007 SP1, also has Sharepoint 2010 foundation running on it. I ran the exchange 07 SP3 update but it failed halfway through. Exchange now appears to have sp3 installed but its not complete. When I try and run it again it fails at the countering part.
In the exchange logs it says: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
Can anyone else suggestion any other solutions?