Try it in some other environments and see what it does (dev, stage, etc.). He's right - Hyperthreading is a no-no for SQL Server, although I'm not sure that simply compiling a stored procedure will be affected by this...it certainly might. I don't think that a Hyperthreaded box has been offered by, say, Dell, for a couple of years now. At any rate, see what it does elsewhere to start whittling away at the problem; doing this might tell you if it's the environment.