I think I have found an odd bug with the spell checker…
DO NOT try this if you are doing anything important as you can not get out of the loop!
Ensure you are set to spell check emails before they are sent (Under Tools, Pref)
Compose an email message
in the body text, put two identical words - any two words. For example you you
Put an email address in the TO field
Click Send
The spell check will pickup on the duplicate words “you you”. Change this to “to you” and click Replace All
watch…
it get’s stuck in a loop and you can not terminate it.
REBOOT!
PS - Doesn’t happen on R5