Problema al actualizar php 5.3 en plesk 10.4

[jagh1982]

Hola, hace poco que contraté un servidor cloud con centos y plesk 10, así que soy bastante novato todavía y al intentar instalar el sugarcrm, me dice que por lo menos tengo que tener la versión 5.2 de php. He intentado actualizar el php desde el plesk y me sale este error.

Installation started in background
File downloading PSA_10.4.4/thirdparty-rpm-CentOS-5-x86_64/thirdparty-10.4.4-cos5-x86_64.hdr.gz: 38%..44%..78%..83%..100% was finished.
File downloading PSA_10.4.4/dist-rpm-CentOS-5-x86_64/build-10.4.4-cos5-x86_64.hdr.gz: 10%..20%..31%..40%..50%..60%..71%..80%..90%..100% was finished.
File downloading BILLING_10.4.4/dist-rpm-RedHat-all-all/build-10.4.4-rhall-all.hdr.gz: 12%..21%..30%..43%..50%..63%..72%..80%..90%..100% was finished.
File downloading PSA_10.4.4/update-rpm-CentOS-5-x86_64/update-10.4.4-cos5-x86_64.hdr.gz: 10%..20%..30%..40%..50%..60%..70%..80%..90%..100% was finished.
File downloading BILLING_10.4.4/update-rpm-RedHat-all-all/update-10.4.4-rhall-all.hdr.gz: 100% was finished.
File downloading SITEBUILDER_10.4.4/update-rpm-RedHat-all-all/update-10.4.4-rhall-all.hdr.gz: 100% was finished.
File downloading SITEBUILDER_10.4.4/dist-rpm-RedHat-all-all/build-10.4.4-rhall-all.hdr.gz: 15%..20%..30%..42%..52%..64%..74%..81%..90%..100% was finished.
File downloading SITEBUILDER_10.4.4/thirdparty-rpm-RedHat-all-all/thirdparty-10.4.4-rhall-all.hdr.gz: 100% was finished.
File downloading BILLING_10.4.4/thirdparty-rpm-RedHat-all-all/thirdparty-10.4.4-rhall-all.hdr.gz: 100% was finished.
Retrieving information about the installed packages...
Determining the packages that need to be installed.
Error: Unable to proceed with the installation until the package php-pecl-memcache-2.2.6-1.el5.x86_64 is removed from the system.
Not all packages were installed.
Please resolve this issue and try installing the packages again.
If you cannot resolve the issue on your own, contact product technical support for assistance.

Haber si alguien me puede echar una mano, porque me pide desinstalar memcached y lo necesito para mi tienda de prestashop y no sé si luego se puede instalar de nuevo o no.
Gracias.