Hmm, I was having that issue a couple of weeks ago, but have not had it with any nightly in the past week or so. I had used Titanium Backup to "freeze" the AOSP Keyboard entirely, which fixed the issue when I was having it, but now it's still a checked off selectable keyboard I just don't use. I use Swype as my on-screen keyboard, and the physical one mostly. I'm sorry my reply isn't helpful, but I haven't cleared data lately and just keep upgrading to each nightly as they come out, and this issue went away on it's own. :-\ Only problem I'm having is that rarely when I go to turn on my screen, only my hardware keys will illuminate for a few seconds and the screen will not turn on at all. The only solution I've found has been to just hold the power button until the phone reboots. I have no idea what leads to this state, but it has occurred with every nightly lately, but rarely.
It stands for Milestone, and means that they feel it is a pretty stable build that now you can submit bug reports on as they work toward stable RC's. Installed it on my Droid 4 this morning and it seems okay, though I'm still having issues maintaining a solid data connection at times, usually when I fall out of service for a moment. Toggling airplane mode usually works, but would be nice if it didn't happen ;-) CyanogenMod 10.2 M1 Release | CyanogenMod
