I am trying to upgrade an installation of php 5.1.6 to 5.2.3 on Centos 4.2. When I do
yum upgrade php
all seems to start out well, but then the process aborts with this message:
"Package php-imap-5.2.3-3.el4.art.i386.rpm is not signed".
I tried setting gpgcheck=0 in yum but this didn't help.
Does anyone have a solution to this problem?
php upgrade fails - Unsigned package
Fixed the problem with the signature but still no install
Discovered that gpgcheck=1 was also in atomic.repo I changed that to 0, and everything ran until it said "done" but nothing was installed? 

Deleted old version of php first, and then it worked!
Deleted old version of php first, and then it worked! 
