bit late on trying out 99.10.2. Mailboxes are definitely working better with mbox format. I'm still seeing 15 to 30 seconds of 40% CPU utilization whenever I access the inbox (1400+ messages). I'm seeing similar magnitude but shorter duration hits of CPU utilization whenever I access any other mailbox. Utilization seems to go down a little bit once the indices have been built (i.e. after the first time) but the lag is noticeable.
in other words, performance is better than UW. (woo hoo!). Very early on the testing I have the server vanish on me at one point but since I was lazy and use the binary rh8 RPM, I need to do little investigation to find out if or where any log might be.
I haven't dared try mixed mbox/maildir mostly because of lack of time to a) research the right way to do it and b) clean up the mess if it dies. Converting over 100 percent to maildir has a similar barrier. I will get to it when the pain is bad enough. Fortunately 99.10.2 may have sufficient analgesic qualities for the short-term.
---eric
-- Speech recognition in use. Incorrect endings, words, and case is closer than it appears