Comment 56 for bug 976124

> 1) All greeters works fine until I login in one of all seats, it
> does not matter which one.
> 1.1) When it is done remaining unity-greeters starts eating cpu.

Are any messages being logged over and over when it does this?

Next time it enters an infinite loop, please see if you can attach gdb to the process and get a stack trace. (Please install debug symbols first; see the instructions at: <https://wiki.ubuntu.com/DebuggingProgramCrash#Debug_Symbol_Packages>.)

> 2) When one seat is logged in there is two things that could happen:
> 2.1) Trying to select different user results in greeter crashing
> leaving with black screen with ugly cursor.

Does the greeter crash, exit, or move to the background?

Try attaching gdb to the greeter before selecting a different user. If it crashes, please post the stack trace. (again, please install
debug symbols first)