I've made a slight tweak to the authentication modules at the recommendation of one of the other users of the MySQL Auth Module (Mark Blair) so I'm trying that one out to see if it stops the Apache box from restarting every hour or so. Most people won't notice any difference with any luck, but with such a fundamental change like that, you might - so if you do please let me know :)
The problems will almost certainly be related to login - so if it's not accepting your password, or it accepts it for the first screen but then when you post the entry it asks again or something silly, thats what to look for :)
Steve.