SP2010: Some Ribbon links are disabled in Central Admin

Problem:
When using Central Administration site with Internet Explorer that is running locally on the same server on which the Central Admin is located on, some buttons on the ribbon are disabled. This happens even when you are logged into the server as local admin, and logged into the Central Admin site using Farm Admin credentials. With Firefox or remote IE buttons are enabled

Solution:
Start IE instance as Administrator (right click IE icon and “Run as Administrator”).

SP2010: Defining managed paths in SharePoint 2010

Problem:
I need to define managed paths in SharePoint 2010. I cannot find link to it in Central Admin, where is it?

Thoughts:
Trivial after you find it, but took some browsing through the Central Admin in order to find the new location and realize that one really should pay attention to Ribbon.

Solution:

1. Go to Central Administration -> Application Management -> Manage web applications
   
   
   
2. Click on the web application for which you wish to define managed paths and click Managed Paths on the Ribbon.
   
   
   
3. Proceed as usual
   

MOSS: Unknown error on Central Admin

Problem:
The front page of the Central Admin site works, but clicking on any link on the page gives "Unknown Error" (just black text on white background).

Workaround:
Reinstall MOSS and hope that it won't break again. Don't waste your time fiddling with Configuration Wizard, it won't do any good.

Ok, you might find the cause of the error by disabling custom error messages on the site.

Solution:
Many, depending on the error.

MOSS: Unable to view the stack trace in Central Administration

Problem:
Unable to view full stack trace in Central Admin site.

Web.config of central admin site has

<safemode maxcontrols="50" callstack="true">

and

<customerrors mode="Off">

Solution:
You must set AllowPageLevelTrace to true as well like this:

<safemode maxcontrols="50" callstack="true" AllowPageLevelTrace="true" />