Hello,

we have come across an issue with some of our client machines getting an out of memory exception when running an application with an UltraExplorerBar.  The ultraexplorer bar is docked in a panel that flies in/out on the left of an MDI form courtesy of the UltraDockManager control.

Inside this ExplorerBar, can be anywhere from 2 - 50 groups, all collapsed on load.  When a user expands the group, anywhere from 10-30 Items can be added, based on permissions.  For some users, we have noticed that after expanding a group and moving a mouse over the items, the memory usage of the application can will just upwards of a gig, sometimes causing the Out Of Memory exception, and the applicatoin dumps.  Once the user Mouses outside of the ultraexplorerbar, the memory returns back to its normal usage. The problem is, we cannot duplicate this on any of our development machines.

this problem has happened on machines with 2 different operating systems (XP and Windows 7).  The Windows 7 machine has 3 gigs of RAM, while the others have 2. 

After viewing the error on these machines, I noticed mention to Bitmaps being drawn, so I removed the images from the ListItems, and the problem no longer persisted. 

I am using Infragistics 10.3.20103.2083.  Attached is a SS from a user

Does anyone have any ideas about this, or has this behavior been observed before?  Any help is appreciated.  I can provide more details if necessary.

Thanks, Chris