Ubuntu 12.04 experiencing an internal error

Hi,
My Ubuntu 12.04 has experienced an internal error. I do not know about the error.
I clicked on Show Details, but I understand nothing. It says “If you notice further problems, try restarting the computer”.

Ubuntu
Sorry, Ubuntu 12.04 has experienced an internal error.
If you notice further problems, try restarting the computer. Send an error report to help fix this problem
Show Details Continue
Please suggest me about this internal error. What should I do?
Any help is appreciated.
Thanks.
