I'm using Picasa 2.5 Beta (32.43), and I notice from Sysinternals'
TCPVIEW app that it is listening on port 80. So I fire up the browser,
and sure enough, http://localhost returns a blank page. When I close 
Picasa, the browser returns "The page cannot be displayed".

What a great idea, a user-mode graphics application listening on the
most attacked port!

Picasa 2.2 (28.20) doesn't do this.

Cheers
Geoff Vass