I've been logging in recently for 60 minute sessions, compared to at home where I log in once, forever.
Noticed a few small issues you may or may not want to fix.
1) On logging in, login2 redirects you to a page not found rather than to ye olde blah.
2) On the page not found page, the shining source link is to .org rather than .net
3) You can't log out manually, it says session error.
Using IE 8.0.7600.16385 on Windows 7, default security settings. No problems elsewhere.