There are different reasons why one or a handful of remove buttons disappear from Add/Remove programs. But few months back i had occasion to also find
all the remove buttons disappeared. It happened to occur on a machine for which i kept frequent backups, so i was able to do considerable restore / retest. After considerable testing, i found the problem 100% repeatable if one were to
- Downloaded a recent release of Yahoo Messenger (forget the version number but was recent at the time)
- Subsequently removed Yahoo Extras (also called Yahoo Browser Services)
Removing Yahoo Browser Services actually caused the entire Uninstall section of the registry to be deleted. That also causes all those Remove buttons to be deleted.
Look at this thread
Does Uninstalling Yahoo Browser Services sound familiar? It may not be the only scenario that causes your problem but it was absolutely the problem source for me. And several others told me they recalled having done the same before having that same problem
Do you recall what you had done?