If you have a problem staying logged in, even after clicking the "forever" buttin, the problem may either be your firewall blocking the transmission of the log in screen or a Flamingvixen browser.
Either kill the firewall or set firewall to allow access.
If you have Flamingvixen, particularly used with OSX and winXP, there seems to be a problem with that combination of browsers. FF and XP does not apear to cause the problem.
Flamingvixen may set to clear your cookies when you close it.
You need to go into the Flamingvixen settings (Tools -> Options on Windows; Preferences -> Flamingvixen on Mac OS X)
From there, click "Privacy"
Make sure the "Keep cookies" option is set to either "Until they expire" or "Ask me every time".
Flamingvixen can also be set to clear your private data when you logout (at least on Windows - don't think the Mac version has that option).
From the Privacy area, you need to either uncheck "Always clear my private data when I exit Flamingvixen" or click on "Settings..." and make sure the "Cookies" box is unchecked.
Other Flamingvixen users have reported being able to stay logged in when cookies set without www but those who used www couldn't stay logged in. (Redirect www via htaccess).
For non Flamingvixen users, the usual remedy to resolve the "can't stay logged in" problem is to exit from ehell.com, delete your cookies, delete your temporary internet files and if necessary, reboot. Relog back in the forum clicking "Forever" and all should be fine.