[CentOS] segmentation fault issue

Hai all,

I have a machine running centos3.4, once in a while trying to run yum, i got a segmentation fault.
Anyone could give me an advice as im already runnig the latest patches etc. I had already checked
the  harddrive but it give out no error results.

Has anyone ever come across the segmentation problem in yum. Or any advice in troubleshooting it ?

Thanks