Comment 19 for bug 568154

> The firewall log says bazaar.launchpad.net was trying to connect to TCP port 1346, a port it says is commonly used by Alta Analytics License Manager. There's no hint that access was denied, however.

I suspect that 1346 is actually the local transient/ephemeral port, and this was your machine trying to connect from local port 1346 to bazaar.launchpad.net (port 80 or 22 or 443), and your firewall is a bit confused.

http://en.wikipedia.org/wiki/Ephemeral_port says that Windows "through server 2003" use TCP ports 1025-5000 as ephemeral ports, and I presume that would include XP.