i have two problems with my internal zimbra IM server and would like some advice on how to go about digging into what is causing the problems so i can either fix it or report a bug.

1) my connection from pidgen to my zimbra IM server keeps getting disconnected. this happens every 5-10 minutes. this does not happen with my other IM connections, so i know this is isolated to my zimbra IM server.

2) when i close out my IM connection, my buddies see me as still signed in and when they message me, those IMs get lost (they don't get an error that i have signed off) so i end up losing a lot of messages this way.

anyone seen anything like this, or have advice on how i can get to the bottom of this?