So I wrote a post, then saved it before noticing errant markup at the foot of it - so I tried to use the inline editor/quick modify, which opened but when trying to save I just got the 'session verification failed' warning.
Don't know, didn't try to debug it further.
/me quick edits.
Thanks for the report.
No clue why. I hope it will decide to strike again, I don't seem to provoke it atm, perhaps I'll get lucky with debugging the code either way.
Did that happened again recently to anyone?