Vostro 1510 integrated webcam problem with windows live messenger

hi, i'm wondering if anyone can help
I have a Vostro 1510 with an integrated webcam which works fine apart from when I go on windows live messenger. Occasionally it will work fine but other times, the majority of times, it will just freeze windows live, apart from microphone, to the point where i need to open the task manager (ctr Alt Dlt) and end windows live.
When I do this a message comes up saying Windows Live is not responding, would you like to end now. So I do end the program and then open and sign back into windows live.
I have tried re-installing windows live but the problem is still there.
Like I said, sometimes the webcam will work but when it doesnt, I can't type or open conversations or close conversations or anything but talk on microphone and hear the other person talking on microphone, I can't even recieve the messages sent by other people.
So I was jsut wondering if anyone else has had this problem and, if so, if you can help me please.

 

does anyone know how to help? at all?
any ideas?
please?
it will e greatly appreciated

 

What version of WLM?

 

windows live messenger 8.1

 

windoes live messenger 8.1

 

Did you download the latest drivers from Dell?

 

yesh i did...and that still didn't work
i also used the disks that came with the laptop and uninstalled then re-installed the webcam. It seemed to work on windows live messenger at first (one time) then the next and second time I tried with a diffent friend and it didn't work and windos live froze again