Strange glitch in Apple aluminum keyboard: it stopped registering E if I hit e + shift

[struggle4progress]

but not if I hit e + capslock. E was the only character affected. The glitch persisted for about a day; it has since resolved itself; I'm not sure why. I turn off the machine whenever I won't be using it for more than a couple of hours

Any ideas?

[alfredo]

1. Restore from last backup.

 ------ option-shift- k



FYI : http://kb.iu.edu/data/aeqb.html

Turn your keyboard up side down and shake it out. There could be something in there.

[struggle4progress]

2. Thanks