Did you ever find out what to do? I am looking for the same answer?
I noticed this too when I was in the car attempting to make a call,the software would tell me I had 3 missed calls, which none were recently missed. I ended up going into the logs manually, hitting the menu button and sorting by missed calls and then deleting it.
If there is a solution to this I would love to know!
Ugh, the more I use the vlingo software the more I wish I could strangle it's virtual personage... the voice recognition has been horrible for me and I have had to spend more time trying to figure out workarounds to things that should be easily visible through it's settings so far.
Oh well guess I am stuck with it though until I can find a better alternative! (and boy have I tried some pretty pitiful alternatives!)
I really don't like having to manually go into my dialer and then log to clear missed calls. My BT tells me I have a gazillion missed calls because I haven't cleared my call log. I like to keep my call logs for a record in case something weird happens and AT&T tries to charge me 4K for a 5 hour call to Nigeria! There must be a way around this.