[CentOS] OT: Problems... Resolved

Oh dear, I feel I should hang my head in shame !  I blame it all on lack 
of coffee...

Many thanks to all that took the trouble to reply to what turned out to 
be my own self-inflicted problem....

It turns out that I had upgraded one of the servers to PHP5 to do some 
testing and had left it that way rather than reverting to the stock 
Centos PHP4. That, coupled with a rather outdated install of Horde was 
causing the problem. Back on PHP4 now and all is ok.

Thanks again to all,
Andy.