When you go into an application in microsoft office and try to open a file it will sit for a few minutes or so then eventually allow you to select the file you want
This is an issue with old documents in your history not being available any more, we need to clear this down.
To fix this do the following.
1. Open your registry by going to start “Run” and entering “regedit” and then pressing return. Then find the key below.
Value Name: NoRecentDocsHistory
Data Type: REG_DWORD (DWORD Value)
Value Data: (0 = disable restriction, 1 = enable restriction)
you can also resolve this by deleteing the following.
\Documents and Settings\”user_name”\Application Data\Microsoft\Office\Recent