1. Yes you can remain logged on.

When you enter your name and password in the sign in box there should be an entry under that labeled "Remember Me" check that box. But, everytime you delete your browser cookies you throw away how this web site recognises you and you'll have to sign in again on your next visit.

2. Yes spell check is working.

The spell checker appears in its own little window. If you have a popup blocker that prevents popup windows you'll never see it.

Unblock popup windows for this site and the spell checker will work. This is also a fix for some attachments that do not appear.