Been using Mu since beta and updating since. Had a bunch of old files still leftover that weren't being used, so this time when I upgraded (from 1.2.3 to 1.2.5a) I just deleted all the files except for what was is wp-content and uploaded the new files.
At any rate, now the passwords for new signups don't work - and neither does password recovery for them. Any ideas?
ekusteve