|Take great care with RegSeeker. Those who say it never gives any problems probably don't realise that RegSeeker was the culprit when at some later date they need to re-install something or search the Web for registry entries.|
RegSeeker managed to kill off a key memoriser program on my machine (repeatable). It also removed my IE entry and CP/Add-Remove (again repeatable).
It says all manner of well known file types such as .cpl .swp and .dat are invalid, even though there are plenty of valid files on the machine with those extensions.
To my mind it is the worlds most worrying registry cleaner. It has only one good thing going for it. When you undo what it has done it actually gets it right (it restores the entries in reverse order).
Look at the screen when registry entries show up on many other cleaners. Note the order in which they are listed, then look at the undo. If they are in the same order then this is what can happen if they remove Keys:
Registry cleaner removes a Value. Later on it decides to remove the Key too (folder). When you run the undo it first puts the Value back. Later it puts the key back which overwrites the entry, with one that has no Value. Whizz bang and your undo has lost a Value.
You sure have to be darned careful with registry cleaners and to heck with what anyone says to the contrary.