Hung citrix sessions???

I'm trying to help a coworker and don't know citrix that well, so please be gentle...

We're using v4.5 on 2003 and it appears that they've been rebooting the servers every week to help clear out hung/invalid sessions.  

Right now we're seeing an issue on 2 of the servers where users are complaining that they can't get into their sessions or the performance is bad.  When we try to list out the sessions with qwinsta or even the Shadow applet, it hangs the utility right after listing the system sessions.  If we try to bring up task manager, we see the icon on the taskbar but it never comes up.  We can see some users on the server using Power Fuze, but when we do an nbtstat; we see alot more users are connected to the system.

At this point, we're stuck waiting for the weekend so we can reboot the server but it seems like there should be an alternative course of action to recover from this and prevent it from happening in the future.

Any suggestions???
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Danny McDanielClinical Systems AnalystAsked:
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TreyBcoolConnect With a Mentor Commented:
maybe something like this

First, I would move to a newer version, if you are on SA, then its free. PS4.5 is pretty old now. There could be something wrong with your ica listner - recreating it might fix the issue.

tool to logoff sessions
Lee OsborneConnect With a Mentor Commented:
I use the User Profile Hive Cleanup Service to help sessions logoff the Citrix servers. We used to get some sessions hang on logoff, which would then cause problems if and when they reconnect.

A few good articles by @TreyBcool above too. I also agree that if you can, try getting an update of XenApp through your farm.

Did you try to reset or log-off  the user session from the Citrix Access Mgmt console?. Click on the problematic servers, see if user sessions are there, then kill them by disconnecting or log-off. Right click on the user id should provide the options.
Danny McDanielClinical Systems AnalystAuthor Commented:
Thank you for your help.  The links helped alot!
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