I recently upgraded my Plesk control panel to version 7.5.2 and it upgraded horde along with it. Ever since then I am having problems with horde showing new mail. The mail is always in the inbox and it is delivered, but it is like it has already been viewed so it contains no bold or highlighting to indicate that it is new.

Has anybody had similar issues or know what I can do or try? I dont know where the horde core files are so I can not tinker around with it. Any help would be apprecaited. Thanks!