In FC4, the optimization string include mtune=pentium4. Does anyone know why this changed to mtune=generic? Is there a performance hit on P4s? Has this been documented anywhere? IIRC, developers claimed numerous performance benefits with the p4 tune. -- Our DNSRBL - Eliminate Spam: http://www.TQMcube.com Multi-RBL Check: http://www.TQMcube.com/rblcheck.php The Dirty Dozen Spammiest Ranges: http://tqmcube.com/dirty12.php