Thanks for a hint. It suddenly started to work. Next time I will try to set a font, now I have selected "Arial CE" 20.

<p>This is some strange defect, see image:</p><p><img src="http://78.108.103.11/~fojtik/pmail/NewMailFolderFail.gif" title="New mail folder failure" alt="New mail folder failure" mce_src="http://78.108.103.11/~fojtik/pmail/NewMailFolderFail.gif" height="960" width="1280"> </p><p> </p>

<p>Hi fojtik<b>,</b></p><p>please try to press the "f" button (when the new <span id="ctl00_ctl01_bcr_PostForm___ForumDescription">mail folder is active</span>) and then select a new font and size. </p>