Unfotunatly I seem to have the same issue on an old CentOS3.8 32bit box .
upgraded perl to 5.8.8 plus all other suggestions on the forum but still cant get WHM11 onto this box and the resellers are not ablt to install accounts anymore.
all other boxes including the 64bit ones dont have any issues , just this one

any other suggestions ?
am also getting sync errors
==> Syncing with update server....syncing RELEASE/scripts
--repo could not be resolved to an ip adddress, please check your /etc/resolv.conf at /scripts/cPScript/HttpRequest.pm line 264.
syncing RELEASE/cpanel
--repo could not be resolved to an ip adddress, please check your /etc/resolv.conf at /scripts/cPScript/HttpRequest.pm line 264.
syncing RELEASE/bin
--repo could not be resolved to an ip adddress, please check your /etc/resolv.conf at /scripts/cPScript/HttpRequest.pm line 264.
syncing RELEASE/perl
--repo could not be resolved to an ip adddress, please check your /etc/resolv.conf at /scripts/cPScript/HttpRequest.pm line 264.
syncing RELEASE/whostmgr
--repo could not be resolved to an ip adddress, please check your /etc/resolv.conf at /scripts/cPScript/HttpRequest.pm line 264.
syncing RELEASE/src
--repo could not be resolved to an ip adddress, please check your /etc/resolv.conf at /scripts/cPScript/HttpRequest.pm line 264.
syncing RELEASE/3rdparty
--repo could not be resolved to an ip adddress, please check your /etc/resolv.conf at /scripts/cPScript/HttpRequest.pm line 264.
syncing RELEASE/cgi-sys
--repo could not be resolved to an ip adddress, please check your /etc/resolv.conf at /scripts/cPScript/HttpRequest.pm line 264.
syncing RELEASE/java-sys
--repo could not be resolved to an ip adddress, please check your /etc/resolv.conf at /scripts/cPScript/HttpRequest.pm line 264.
syncing RELEASE/base/3rdparty
--repo could not be resolved to an ip adddress, please check your /etc/resolv.conf at /scripts/cPScript/HttpRequest.pm line 264.
syncing RELEASE/x
--repo could not be resolved to an ip adddress, please check your /etc/resolv.conf at /scripts/cPScript/HttpRequest.pm line 264.
syncing RELEASE/x2
--repo could not be resolved to an ip adddress, please check your /etc/resolv.conf at /scripts/cPScript/HttpRequest.pm line 264.
syncing RELEASE/x3
--repo could not be resolved to an ip adddress, please check your /etc/resolv.conf at /scripts/cPScript/HttpRequest.pm line 264.
syncing RELEASE/x3mail
--repo could not be resolved to an ip adddress, please check your /etc/resolv.conf at /scripts/cPScript/HttpRequest.pm line 264.
syncing RELEASE/xmail
--repo could not be resolved to an ip adddress, please check your /etc/resolv.conf at /scripts/cPScript/HttpRequest.pm line 264.