I had been having a similar problem
from work as well...however not as frequently on this site as others where my "auto-login" features are not retaining. Seems to be cookie-related, although I'm not entirely sure since my PC security settings are not entirely viewable from my local PC. It's only happened one or two times over the last 2-3 weeks however here on Alla. The other sites, when the browser closes, the cookies reset and I lose retained settings for auto-login.
Let's just blame it on work, though. Seems to be the logical place to place it.
![Smiley: motz](//zam.zamimg.com/i/smilies/motz.gif)