god yeah; words would literally seem to catch in my throat and even though i'd been totally set to say something, there was nothing...
it was even worse on the phone, as people weren't aware of it happening and used to get annoyed thinking it was a prank call.....its left me with an ever present dislike of phoning anyone; very occasionally it still happens, often at the most annoying times.
I had speech therapy though; and i really got lucky, the therapists were fantastic; i had both individual and group therapy (this was when i was about 11) and for all intents and purposed i dont stutter or stammer at all now, and i still utilise some of the techniques i was shown.....