I disabled all plugins, then I enabled vbDonate and each other plugin 1 at a time. It's been a few hours and the problem is now resolved. False alert! Thanks for reading.
It may be that my setup is not supported but I was curious if anyone else was having trouble with
Vbulletin 4.2.4 RC 2 with PHP 5.6 & VBDonate Lite latest version
When the plugin is enabled, my site hits the cap of 100 PHP processes and my server stops responding. I have to kill all PHP...