Hey guys,
I went to update my WHMCS module today as I thought there was a v6 compatibility issue (turns out it was something else) and after replacing all the files, I discovered I needed to update Ioncube loaders. Once that was done, I proceeded to attempt provisioning a new account and the process would simply spinlock with my PHP process at 100% usage.
I also discovered that visiting any page that had ties to the Centova module for WHMCS would result in the same thing.
I promptly reverted to the prior version I had installed and all was well again (and I figured out what my issue *really* was, so it's working fine now).
Just thought I'd mention it as it seems like the latest version could use some testing.
Note: I updated centova to the latest v3 release on the server prior to grabbing the WHMCS module files, so in theory they should be the latest version of the module.