I have the same happen to me today: A PM I composed this morning is still in my Outbox unsent this evening. Signed out and in to see if would shift. No joy.
Anyone else experience this? If not, I need a shoulder to cry on

Squelchtone: Sir, don't mean to bug yer .... and I know you're busy an' all. Just curious ..... did you get my PMs from 13 and 23 December? They did send.