My Computer
System One
-
- OS
- Windows 8.1 Enterprise
- Computer type
- PC/Desktop
- CPU
- Core 2 Duo E6550
- Motherboard
- Gigabyte GA-P35-S3L (rev. 1.0)
- Memory
- 4GB DD2-800
- Graphics Card(s)
- ASUS GTX 560 Ti 1GB
- Sound Card
- Onboard
- PSU
- 600W
Not just you. I get the same (well similar).
Where did you see it? "Custom" is not in the screen prints in this tutorial http://www.eightforums.com/tutorials/4595-search-windows-8-a.html for example.
I looked in registry - the xxx in "winrt--{xxx}" seems to be related to the modern apps - Finance, weather etc.