[Greylist-users] Database performance

[Brian Ross]

>What caused it to return to normal?

This is completely speculation but the timing of events was highly 
coincidental.  The maintenance interval returned to normal the 
weekend that Microsoft released the patch for the WMF flaw.  I 
suspect that a huge number of previously infected systems were 
virus-scanned, cleaned and patched over that weekend.

I haven't had an opportunity to try converting to InnoDB yet.

-Brian