Since installing the latest yum updates a couple of days ago, I'm unable to start Firefox or Mozilla. Both fail silently with no messages printed to console. This is a 32-bit dual Xeon box running Centos 4.2. Here's what i've tried so far. - uninstalled and reinstalled firefox and mozilla packages with yum. - deleted my mozilla preferences (~/.mozilla) in case of a corrupted profile. - running as root. only difference is now mozilla segfaults instead of failing silently. - setting debug options in the firefox and mozilla startup scripts ("set -x"). the debug output looks identical to another machine I have on which firefox works, so this is no help. - checked system logs. Anyone with more knowledge of firefox/moz know what could cause a silent failure like this? I can provide debug output if needed, but I didn't see anything useful in it. Thanks. slaton