Paul and Lei, thank you for your theme.
There is a problem in general.php line 90 (latest version 7th December) and in all previous versions when https: is used for logins. The $CFG->wwwroot causes an insecure item warning as it is http not https. This could be fixed by using an if statement to detect if we were using https and changing to $CFG->httpswwwroot in that case.
Is there any way of improving the menu usability? On laptop track pads, young users and elderly users even with mice, it is difficult to make sure the cursor does not move off the menu, particularly as you go down the levels. Overcoming this is one of the main features of the 'superfish' Jquery based menus and even the YUI Menu function has a time delay when you hover off. Is this possible in moodle? We have YUI.
Regards