I just updated f11->f12. After, I followed instructions to convert root partition from ext3->ext4. I used superrescuecd to do it, so filesystem was not mounted. Rebooted into f12 and everything seemed fine. I also was trying out nouveau instead of nvidia, which was OK until I tried to play an hd video. The machine became so unresponsive (seemed to be swapping continuously) that I finally had to use the power switch to shut it off (this is a laptop). On power up, the superblock was corrupted. I tried fsck, but after trying to repair it screwed up beyond all hope, and I had to reinstall. So, what in the world could have happened? -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines