I had a bit of a wobbly this morning
I went to login and it wouldn't work.
I got the normal type message about the fact I hadn't typed something right. Close inspection revealed that the end of field for the user name wasn't accepting all the characters of my email address. I could get so far and no further.
Panic panic - write message / email everybody I can think of!
Read message again and it says "user name or email address"
Tried login again using just my username - and it logged me in
Come and write forum message with very red face!