I am recreating annually previously archived and deleted courses, and in about 10% of the time (10 out of 100) I receive this warning. So far I have not seen anything else wrong, but I do wander if archiving/deleting some courses did not work completely.
WeBWorK Main Forum
Webwork warning
This forum has a limit to the number of forum postings you can make in a given time period - this is currently set at 10 posting(s) in 1 day