Is anybody else getting a re-occouring bug where TF2 freezes for a random period of time (for me, it's been from about a second to 5 minutes) and then gets you kicked from the server a short time later because you have "lost your connection to steam"?

I then can't re-join untill i minimise and have a fiddle with my steam friends list.
I've been getting it for a while now, and I know pooky has as well.