Hi!
Scott is right, you'll need to investigate what the ULS logs are telling you in order for us to understand what's going on.
Please review the logs when the problem occurs, and if you still have a problem please copy the parts of the log here so we can help you out (remove any sensitive data first though).
Thanks!
Tobias Zimmergren
Microsoft MCP, MCTS, MCT, MVP (SharePoint)
Blog: www.zimmergren.net
Twitter: twitter.com/zimmergren
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