Logging in over and over

[RivkahChaya]

I am being prompted to login to snopes MB about every 20 minutes, even if I have been active on the board. This is new. I did not have to login, even after shutting down the computer, unless I had deleted cookies, or recently installed new security software or downloads, or occasionally after an IE crash. Even once when my server crahsed and was down for 30 hours, I did not get logged out of snopes.

I have not reset privacy levels (I checked, in case the cats had done so), nor installed new updates in the last week. This also is not happening on other websites where I am always logged on unless I log off.

Is this a glitch, or a change in snopes security? Is it me, or is anyone else experiencing it?