As in the previous post, pattern unlock is for some reason disabled for me after 2.1.update: "settings->location & security settings-> phone lock settings. Now the only option I can access is 'Change unlock password', which is fine, but unfortunately the 'use visible pattern' & 'use tactile feedback' options are greyed out....however they each have a green tick against each item" But something even more ridiculous happened - after realising that I'll hаve to tap in this password every minute for a while, and seeing that it said "at least 1 symbol" I set a 1 symbol password, and it was accepted all right. But now it has OK button disabled until i put in 4 symbols. So I'm completely stuck. Any suggestions?