Originally Posted by RoryC
my problem that intermittently and usually overnight I get 'incorrect password message' when I try to unlock, only solved by a soft reset which is rather worrying.
Ha! Think that's worrying? ...You're right.
I had this a few times in the past and each time was able to solve it by a soft reset.
Not the last time, though. After trying numerous soft-resets, I finally saw no other way out than to hard-reset my device. In the end, it didn't even display the "incorrect password" dialog anymore. I suspect I had entered an "incorrect" password too many times, but the device did not manage to present me with the "enter a1b2c3" prompt that it usually does when that happens.
Very, very frustrating. Some quick googling gives a few reports of this happening to other people, not just on HTC handsets either. Not too many though, so it sounds like it's pretty rare.
(For the record, running 1.48 WWE here, had a 7-digit simple PIN set as the device lock password, with Windows Default display)