It finally happened – I got a round tuit. The tuit in question was updating Planet Identity to a more recent version of the Planet software – specifically, Sam Ruby‘s Venus. There will be a bit of short term disruption as things settle down (I had to clear the feed cache), but the upside is that Atom feeds are now properly supported – no more <s and >s in the feed. Hopefully 
Did you consider moving to Roller Planet? – eduard/o
I did indeed consider it – in fact I asked Linda about getting onto the planet.sun.com infrastructure, but it wasn’t feasible – I would have had to change the URLs for both the page and the feed.
I’ll take a look at running Planet Roller on the current hosted infrastructure… it might just be doable… thanks for the ‘prod’ 🙂