The iostat and sar data disagrees with it being an I/O issue. 16 gigs of RAM with about 4-6 of it being used for Cyrus leaves plenty for ZFS caching. Our hardware seemed more than adequate to anyone we described it to. Yes beyond that it's anyone guess. ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html