suse90 boot problem

Has anybody have this happen? I have SuSE 9.0 on 2 box. 1 upgrade from SuSE 7.3 ,2nd upgrade from 8.1. both have be running SuSE for years but now with 9.0 both runnig 9.0 for weeks, well stop working (noresponce from keybroad or trackball) when i reboot i get alot of boot errors (sygment falts) tben ends boot.