Indexing across a mount point in windows

"After much searching, I found this: http://support.microsoft.com/kb/260207

It explains that drives mounted to folders are not indexed BY DESIGN.

It does not explain what kind of brain dead design this is, or what the reasons are."

"I have a similar issue on Windows 7 64bit. What I found is that if you (through Explorer) go to the folder to which the drive is mounted to, and then go into a subfolder, and the type something in the search textbox in the upper right corner, you will get a popup asking you whether you want to index this “unindexed” folder. If you click yes, the indexing service will index the folder.

Now I have no idea how to remove this location from the index as it doesn’t show up in the “Indexed locations” window. But the files are indexed, no doubt! EDIT: It seems that after the folder is deleted or unmounted, one can see the paths in “Indexed locations” window as unavailable.

One could tweak the registry and add mountpoints manually: see here

I also find thet my mount point is correctly registered here:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Search\UsnNotifier\Windows\Volumes"