Good start would be to stop capitalizing every word in a sentence, as it hinders clearness of your question.

Now, it looks like something crashing hildon-desktop. No one can be sure in what messed up state your system is, so we can only guess - maybe you're using faulty widget? Check, if it happens too, if you put *only* one widget on desktop, one of pre-installed ones (calendar, media player...).

If they stay as it should, check every of your widgets one by one (yes, many reboots required, as your problem manifest itself after reboots). Then dump widget causing problems.

There may be tons of other reasons, but this is good start to filtering out possible case.

/Estel