I did a clean new install. That did the job. Nevermind the time spent. Thanx for your fast responses/help!
Didn´t help. Only lost the german language pack, which i reinstalled. Chmod all to 775 – no change.
I will check out reinstalling fresh files. Checked it before posting with other browsers. Thanx a lot.
Whatever that does with Firefox, tried it right now . nothing changes…