I have installed last week Ubuntu 11.04 64 on a new machine. I am running the GUI using Unity. However I have noticed that after 1-2 hours the process zeitgeist-daemon starts using excessively the machine's memory. Up to 800 - 1000 MB!
I am having the same issue on another machine where I used to run Ubuntu 11.04 for several months without problems until using Gnome. The last few days I have changed to Unity and the exact same problem occurs.
I am forced to kill the process otherwise I am unable to keep working with the machines.
Should I file a bug?