Your Windows Mobile may be very slow because of excess entries in the Registry. So it is better to clean the registry very often. Mobile Registry Cleaner is a freeware software to clean your windows mobile registry. Registry Cleaner will scan for orphan, invalid and temporary keys in registry and allows you to delete them which will result in less cluttered and compact registry. Scanning and cleaning reduces the size of the registry thus making the access fast. It improves the overall performance of your Windows Mobile.
After scanning the registry Mobile Registry Cleaner will display the results. So you can actually decide which entries to be deleted. You can also take a backup of your registry with Mobile Registry Cleaner. In case your registry is corrupted it will restore the registry with the most recent backup data. It works for Pocket PC 2003 SE, Windows Mobile 5/6 and requires .NET Compact Framework 2.0.