Add/Remove list is truncated

My list of programs in the Add/Remove window is truncated.

I remember reading that this was due to a corrupted entry. I do not remember how to trace it down. I looked in the registry under [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall] and I could not see any entry that is clearly corrupted.

Any idea how can I restore this list ?

Thanks