First thought - Have you deleted any groups? Make sure Primary and Current group for all accounts don't refer to old deleted ones.
Nice and sunny down under I suppose! Here in Sweden it is COLD. You can walk to Finland over the ice and it is spreading south fast now.
There has been changes of group names. Not really sure if groups where deleted. But the answer was what I suspected. As soon as the users came to the office and restarted Console the error message dissapeared.
Which leeds to a need for a useful functionality to clear all Console sessions from the server. Do you know of any way to accomplish this Dave?
Now why would you want to walk to Finland Goran? They don't even speak proper over there :-)
We use a pool recycle event on the servers at (say) 1 am in the morning if you are running windows 2008 etc. This seems to flush most things out and ensures any changes to privileges/windows granted during the day are picked up by WebAccess too. It's a bit less heavy handed than iisreset, and is often easier to get scheduled because it only affects the apps in that pool. It doesn't always clear everything - TPS still seems to hang onto some areas, but it's worth an inital try.
I believe LANDesk themselves have an uptime utility which reconnects apps up the the TPS they are using to reduce the subsequent login lags after iisresets and recycles, but I don't think it is standard product (shame).