We have setup OME to discover/inventory ~40 devices.  The 40 devices all show up in Devices under servers and appear to be fully populated with data, but then just a few minutes later they disappear.  If you rerun the discovery/inventory they appear again for a while, and then disappear again.  So far it appears to be happening with just our 2008 servers.  2003 servers look to be stable and remain in the devices list. 

Any Ideas why this would be?

Thanks