I was using my desktop effects with no problems until last night.

I could see the gears when typing glxgears (or somthing like that) and had the direct rendering: yes until last night and all the effects were working fine BUT all of a sudden and with no apparent reason, those effects were disable and I can't enable them anymore because when I try to I get an error message that reads that those effects couldn't be enable.

Can anyone help me?

I have an ATI Integrated Card= GM965/GL960.

All worked properly until last night, and now it does not... why? and how do I fix it?

Is there any way to recover the effects??