Ertain Sorry, I am not trying to hijack your topic but I was about to raise a new topic had googled with little success when forum search came up with this thread. My details:
I had just started up LXDE done a bit of work and then rebooted the system to go back to my main pclos2010-KDE (fully updated) the startup process seemed to go ok and just on or starting the last splashscreen when the 'the screen' was replaced with black screen and nice picture in the middle and cute little red bug top left corner of the small new window.
Something about sending report away, but no report could be produced. I have written down the main text:
Executable kdm_greet PID Signal: 8 (Floating point exception) Can't say it lifts the spirit to see such a message, any suggestions what I am up against?
By closing this message twice I get normall tty1 login line. I can login as user and using
startx all seems well and I can use the pc as normal and I would not know I have a problem. Though I have this feeling it is just not as fast as it used to be.

I have not tested the theme option yet, a bit busy on other problems. I have now feeling what program might be involved, I have done a small update last night but this has not solved the problem.