OS X bug?

[Eagle]

Greetings, all.

I have discovered what may be a bug in OS X, or perhaps a bug in 
HotKey, which I run as a result of my use of StickyBrain. However, I 
have tried this without HotKey running, and the problem persists, so I 
think it is a bug in OS X. I have searched Apple's KB and have not 
found anything related to this problem.

The symptom is that the keyboard quits responding to all key sequences 
except the 3-finger "Force Quit" salute. (Well, the "reboot" 3-finger 
salute works too, of course.)

I have finally figured out how to reproduce the problem: use 
command-tab to start changing apps, then shift-command-tab to go back 
to the original application. Bam - keyboard lockout.

Would some of you mind trying this sequence to let me know if it locks 
you out? And then try the Force Quit sequence (command-option-escape) 
to see if that restores your keyboard?

Please specify whether you run StickyBrain or other hot-key software, 
and your OS X version.

Thanks for helping me track this one down.  I will be submitting a bug 
to Apple once I define the problem's parameters.

Eagle