I'm running stable/10 r260037: FreeBSD mobileKamikaze.norad 10.0-PRERELEASE FreeBSD 10.0-PRERELEASE #6 r260037: Sun Dec 29 14:58:09 CET 2013 root at mobileKamikaze.norad:/usr/obj/HP6510b-10/amd64/usr/src/sys/HP6510b-10 amd64 While moving a large file from a nullfs mount to a UFS+SU mount (the nullfs mount is on the same UFS+SU mount) the system becomes fully unresponsive. I.e.: - X freezes and doesn't react: - Screen frozen - Mouse cursor does not move - No keyboard interactions - CTLR-ALT-Fn into the console does not work - Skype video calls freeze and break down When the mv is completed the system is fully responsive again. Regards -- A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing on usenet and in e-mail?