Comment 39 for bug 774071

I am now having this problem too, after just upgrading to 12.04 from 11.10. I have noticed 2 things that may be relevant:

(1) It only occurs when booting with lightdm as display manager. I'm a KDE user, and when I switched back to kdm, the problem went away. I've switched between lightdm and kdm a handful of times, and so far the problem occurs 100% of the time when running lightdm and never under kdm.

(2) Sounds like people see at least one other process going hayway besides indicator-datetime; for me it is geocode-<something>... I forget exactly. Also the dbus daemon... those 3 are way out of line under lightdm.

Also... most of the above reference only CPU utilization, but on my system the memory usage grows steadily, eventually consuming all physical memory and all swap at which point the system becomes completely unusable.