Hi Krileon,
The change to administrator / components / com_comprofiler / plugin.foundation.php, seems to have done the trick. At least, it let me login after it had given me the dreaded "session expired ..." message at 9:00 pm. Before this, once I received the message, I could not get in until 12:01 midnight. Once I made this change though, I was able to get in right away. I will let you know if it stops working. Anyway, thanks for figuring it out and good work.
Louie