[ubuntu-uk] Xorg high CPU usage

[Pete Smout]

Hi,

For about a week now my laptop (ubuntu 10.04 LTS fully updated) has been 
freezing up for approx 30 secs, with gkrellm and top showing xorg using 
100% cpu usage?
There seems to be no pattern to what programs I am using, everything 
from open office to clementine to smplayer or thunderbird, not at any 
certain time of day or day of the week, or even weather using the 
inbuilt screen or external one.

My understanding (admittedly limited) is that xorg is the bit that works 
the display (screen). Has anyone else come across this?

For reference the laptop specs are:

Acer Aspire 5720
Intel T5250 Dual core processor
Ram 2.0 gb
Internal graphics (intel)
Internal sound (intel)

Thanks in advance for any ideas

Regards

Pete