This area will have various sub-sections based on the topic.  The following is a cursory list of area's which I've had problems with in the past and I believe will eventually be populated.

1. Control Panels
   • Parallels (formerly Ensim) Pro
   • Parallels Plesk Panel
   • Parallels Plesk (formerly modernbill) Billing
   • Parallels Virtuozzo (openVZ)
     
     
2. Virtual Private Server
   • OpenVZ
   • VMWare
     
     
3. Linux
   
   • CentOS
   • Fedora
     
     
4. PHP
   
   
5. Open Source Products (Misc)
   • ??