mine was about 5 and a half months, and that was middle of last year, when the election was still somewhat uncertain. my understanding is that the backlog has grown since then, not shrunk.
also...be aware that they can "play" with the time by not recognizing your application immediately. the letter they sent acknowledging my application was dated a month after i sent it in, and it was mailed mere blocks from the state DPS. basically, they let it sit in a mail room unopened, which means the clock hadn't even started on my app for a month.
i understand there was a movement to yank CHL authority from the DPS this past lege session. i really hope they shape up or lose it in 2011.