Check your terminal servers and ensure they have the same version of RSClientPrint.dll as the Reporting Services server has. If it doesn't, you just need to copy that file...

You need to enable RPC Out (or was it RPC? - I always get those 2 mixed up) on the linked server object.  Are you able to do a simple...

The latest Service Pack would not make a difference as I noticed the same thing.  Performance wasn't as bad as what you've mentioned during my tests but the OLE for DB2 driver...

It was as I expected and as you mentioned Ken, I was not able to declare a variable to add a login.  @Admin looks fine when I just run a 'SELECT