I noticed that after 2 weeks uptime, it was using quite a large chunk of memory (all operations on the phone took a couple of seconds while it was swapping). Stopping and starting the daemon frred the memory up; it looks like there's a memory leak somewhere.
Latitude suddenly stopped working here 2 hours ago. Doesn't update the location anymore, and refuses to load friends list. It logs in so password is fine (didn't change it anyway).