Yahoo Messenger crashes my computer?

History: My 2-month-old Windows 7 Professional computer has had several blue screen of death incidents, and I have narrowed it down to Yahoo Messenger. Several weeks ago, I uninstalled Yahoo Messenger and all problems vanished. After three weeks or so of problem-free running, I reinstalled Yahoo Messenger and made sure nothing was running during the install. No problems since then until today.

Today: I noticed Yahoo Messenger had changed some features recently; I suppose it updated. I haven't used it in a few days, but I started to use it and moments later I got sent to the blue screen. Uninstalled it and no problems.

Question is: What is going on here? :confused How can I continue to use Yahoo Messenger without crashing my computer? I am going to do a clean install and see what happens from there, but this really shouldn't be happening; no program should crash after automatically updating, let alone shut down the whole computer. I will not use Windows Messenger, I don't chat on Facebook, but I might consider other applications for this function. I don't know what other information is relevant to this problem, so let me know.