CKEditor not showing up in Firefox & Chrome

Hi there, I have the following problem: I don't see the CKEditor in Chrome AND Firefox. Instead of the editor window, it only shows a simple textbox. This problem occurs on every website with a CKEditor, also the demos don't work. In IE the CKEditor works fine. ------------------------------------------------------------- I tried already this: * I resetted all settings of Chrome to default => No effect * I disabled all Addons in Chrome => No effect * I deleted the Cache and Cookies => No effect Every other javascript works (Facebook etc.). The CKEditor also works on an other computer with chrome or firefox :( Maybe the problem comes from my computer? But a few weeks ago CKEditor worked fine :/ I don't know what to do :( Could you please help me? Of course you can have more informations, if you need more ;) Greetings Rodi