[CentOS] Yum Segfaulting

Hi All, I have a Centos 5.8 system with relatively little memory, that 
runs in rl3, where yum has decided not to work any more. As follows:-


# free
              total       used       free     shared    buffers     cached
Mem:        774628     697516      77112          0      77720     313284
-/+ buffers/cache:     306512     468116
Swap:      2048276        160    2048116

# yum -v
Segmentation fault

# uname -a
Linux **.**.co.uk 2.6.18-308.4.1.el5 #1 SMP Tue Apr 17 17:08:10 EDT 2012 
i686 i686 i386 GNU/Linux

# cat /etc/redhat-release
CentOS release 5.8 (Final)

I checked with "rpm -V yum" that its installed OK. Rebuilt the rpm 
database. Cut yum.repos.d down to just Centos-Base. I've manually 
cleared its cache. I've stopped most other processing to get the free 
memory to around 300K and yum still segfaults. I don't really feel like 
managing this system with just rpm :-(

Any ideas where to look - I'm a bit stumped.

Thanks

Ken


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