Novell Vibe 3.x
On the Advanced search form, setup a search which uses a custom command definition with hundreds of attributes. Then, browse through the attribute suggestions to find one you are looking for. After some time, you will get apop-up message saying: 'Your session has timed out. Please sign in again.'
A fix for this issue is available in the Vibe 3.4 Hot Patch 1, available via the Novell Patch Finder.