Captive Portal 2.1, last activity reports with wrong (to old) timestamp

[metrich]

After succesful login, the Captiveportal status shows an wrong timestamp for the last activity. There should not be an older timestamp as the session start time. May be this belongs also to the problem with a negative session duration.

May be it would be better to set $lastact to $cpentry[0] if it is older than $cpentry[0]?  (function captiveportal_prune_old())