MB freezes after screensaver

[alvinrayyu]

my MB freezes after screensaver runs

screen just turn all black and you have to press the power button to restart

I tried to deactivate the screensaver but to no avail

now iChat crashes every now and then, especially when Screen Sharing

I run Onyx and hard drive seems to be ok

I repaired the HDD using the disk utility, but still the problem persists

what should I do now?

[soloworx]

You must have installed a wonky third-party screensaver? Happened to me too before until I deleted the offending screensaver.

[alvinrayyu]

ran Tech Tool Pro and my mac's now working flawlessly

thanks for the tip Soloworx