Using messenger 2009  (14.0.8117.416) with a fresh instal of  microsoft xp

I've rebooted twice.  After the Messenger window comes up, the AT&T stay connected ad starts to load at the bottom of the window and then the Messenger window freezes.  Checking the Resource Monitor, it then proceeds to eat about 1MB a second from then on, suggesting a serious leak in the inline HTML advertisement.

 

In the time it took to write this post, Messenger has consumed an extra 50MB of memory, - it's now 'using' 460MB and rising.

When I try to open the newly installed Messenger, after I sign in properly, the messenger window freezes and does not work (everything else on the computer works fine, and I can even move the frozen messenger box around, but I can do nothing with it) - not even the menu appears. 

After a few minutes, if I click on the box anywhere, an error message pops up saying "This option is not available because this service is unavailable".  What is going on and how do I open this new version of Messenger?