I've had a report from one of our instructors of a student claiming to have done her Webwork assignment but the next day, no credit was given for those problems. I've checked the login and answer logs and I see one record of a login, but no answers recorded for that login.
The student did report that she had to keep logging back into Webwork, but I don't see any subsequent logins or any guest logins in the login log file.
We're using the latest Webwork version.
Best,
Tom
You might try looking in the Apache access logs for requests from that user's IP, to see if she had continued to work after her initial login. I don't think you can reconstruct her answers, but you would be able to tell if she had indeed been working.