I just recently 'tried' to upgrade to PHP 4.3.10 due to the security vulnerabilities of 4.3.8. I have tried updating apache under "Update Apache," but it just broke my box.
It updated fine, WHM shows a sucessful installation. However, I also did /scripts/installzendopt to install zend 2.5.7, and still sites with PHP do not load. They give a "download link" instead of showing the page. However, non-PHP pages display perfectly.
If anyone can give me any tips on how to fix this problem, it will be appreciated!