DO NOT DO NOT replace python 2.4 with 2.7
you CAN install 2.7 along side 2.4
but yum and gnome REQUIRE REQUIRE
the 2.4 version that is in the update repo !!!
I have installed Python 2.7.2 on my CentOS 5.7 box
a source build in its own folder
having 27 installed ALONGSIDE 24 is fine
you just have to inform the software that needs 27 just where it is
but if you just ran ./configure && make
then you replaced the REQUIRED 2.4 ( not good )
if you DID replace 24with 27
REINSTALL 24 rpm before you reboot !!!!!!!!!!!!!
so EXACTLY what did you do to "install" 27 ?