Random Disconnections of multiple users

Hi everyone,

we are heaving a kind of strange problem at the moment.

User getting diconnected in large bulks, somtimes even 20-30 at one time.

This happens severaltimes a day, about every one or two hours.

Syteminformation:

ubuntu 8.10 server

openfire 3.6.3

java version "1.6.0_10"
Java™ SE Runtime Environment (build 1.6.0_10-b33)
Java HotSpot™ Client VM (build 11.0-b15, mixed mode, sharing)

Virual Machiene with about 1 Gb Memory where 512 are dedicated to openfire.

Usersdb is stored in mysql and users are added via the User Service Plugin.

Clients used till now:

Soark

Pidgin

Miranda

PSI

All are mor or less getting the same Problems.

Sadly all logs aren’t showing anything real enlighening…we have no clue how to fix this issue.

Regards,

Hecky