I upgraded to 4.5 without any problems, but I did have to account for the fact that the new kernel can potentially reorder NICs on certain HP and Dell servers, so all was well after I switched the network cable... See: http://kbase.redhat.com/faq/FAQ_46_10460.shtm -Greg Abba Communications wrote: > Anyone besides me totally throw (most) caution into the wind and yum update > any mission critical production 4.x boxen to 4.5 without any problems? > > 8-p > > - rh > >