While we ponder this, if you are worried about this, there is a fairly straightforward workaround that will make you immune from this.
Run two bitcoin daemons. One that is a full peer in the network, but has an empty, never-used wallet.
And another with a full wallet that connects to the full peer. You could even run them both on the same machine (you'll use double the CPU and disk space, unfortunately).
RE: "I better alert people before they can be tracked" :
Dan Kaminsky demonstrated that it is pretty easy to tie bitcoin addresses to IP addresses by watching the network last year. If you are worried about being tracked, you should be running bitcoin over Tor and connecting to only trusted nodes. We make no anonymity guarantees.