How long does it take to delete a message thread with over 13000 texts?

Will this take an hour to delete? More? My phone was laggy and I saw messages to use handcent. So I'm deleting an old thread with over 13000 messages in it. I was wondering if you know how long it will take to delete?

Welcome to the forums. It may depend on what else was in the thread, like pictures and such. And hour seems like a long time, but given the length of the thread, I may be wrong. Hopefully, by now, the deletion is complete?

My phone deletes in a matter of seconds. I don't think it'll take an hour.

If there is going to be a performance problem, the better way to delete the thread is to do the delete from the list of threads, not by viewing the messages in the thread.