Admin Login Problem, om all my Mambo sites!!!

[fissan]

Hi I have serval mambosites running om the same ISP.

From today, I cannot login as an administrator anymore??? I have tested alle my domaines, and tryed on another computer as well - still cannot login???

This is a serious problem!!!

When I try to login on one of my sites, there is a 1 sec. failure warning, which I have made a screenshot of, and then it gives me the admin login again??? Very strange, as I have not changed anything since yesterday.

I'am running Version : 4.5 (Stable 1.0.1).

Any suggestions, on what to do???

Best regards,

René