I have upgraded Moodle from 1.9.5 to 1.9.11 around a month ago, and added Zebra 0.4 theme. Tested it on both FF4 and IE8 and it works as it should, drop down menues and header works great too.
Two days ago, our remote server went down for around 12 hours giving us the "Error: database connection failed". I restarted the server and Moodle is back online. However, the theme Zebra 0.4 now does not show in IE (Internet Explorer) as it should, the header and the drop down menu is all wrong. In FireFox it works great as usual. What is the cause of this? I have not changed anything in the settings or the CSS. Any help to resolve this is highly appreciated.