This is a new one on me. Since upgrading to 11.4.0, I'll...
1) hit command-N for a new email
2) type the address
3) tab
4) type the subject
5) tab
6) start typing in the body
On step 2, 4 or 6 the keyboard will be unresponsive intermittently. If I
switch to another program, I have full keyboard ability. Usually this is
solved by putting my cursor into a different text area in Entourage, typing
a little and then returning to the previously untypable area. Sometimes this
doesn't fix the problem.
HERE'S THE REAL KICKER:
Three times now I have had the text insertion problem, then clicked into
another area to remedy it. The entire computer freezes with no
responsiveness at all from the keyboard for about 5-10 seconds, then the
screen goes blue for about 2 seconds and then it puts me to the OSX login
screen. I log back in and it's as though the computer has been restarted
with no errors at all. All of what you've been working on disappears, with
no explanation.