I increasingly encounter people who misuse "whenever" when they really mean "when":
Whenever I first came to St. Louis, I lived with my Aunt Judy...
Bugs me to death. Obviously they are talking about a one-time event, not "every time I visited St. Louis", which would be a valid use of "whenever".
Is this a common misuse? Is this a regional thing (St. Louis, MO, USA)? This isn't a valid alternate use, is it?