We have decided to apply SP4 and whatever we can figure out needs to be
applied after it to our two 6.5 servers.

I know about N65NSS4A.EXE.

Is there yet anything else that we should apply?

Is there a timeframe for when we might see the SALVAGE issue patched?

Are there any other show-stopping issues we should know about? We're
going from SP2 so any of the issues with post SP3 patches do not apply
in this case.