SATA performance on FC2

["Gene C." <czar czarc net>]

I am seeing extremely poor performance for a SATA drive on an x86_64 system 
... https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=122687

I have two Maxtor 120GB drives on a ASUS SK8V mobo with an Opteron 140.  Under 
FC1 the SATA drive performance matches that of the PATA drive.  However, 
under FC2 performance is terrible (more than order of magnitude difference).

OK, anyone else see this?

On FC2, how do I get the "old" SATA support (like on FC1) specified?
-- 
Gene