Admin panel messed up for no reason

[twazerty]

Something went wrong at my Hosting provider. Suddenly my CMS didn't work anymore. I had to remove this check from the misc.functions.php:
if(!function_exists("readfile"))

Now the website itself is working again. Then I noticed the following problem:
The admin panel is messed up. The same happens when I add a bad script. This is the result:
http://www.radiocollectie.nl/CMS/admin/login.php

But besides 1 script I am using only standard modules:

Album 0.9.3 - added myself and always worked. Also using this module on other installation.
CMSMailer 1.73.14
FileManager 1.0.1
MenuManager 1.6.2
ModuleManager 1.3.1
News 2.10.3
nuSOAP 1.0.1
Printing 1.0.4
Search 1.6.1
ThemeManager 1.1.1
TinyMCE 2.5.5

I noticed something else. When I upgraded to 1.6.6 I got this error while upgrading:

Warning: php_uname() has been disabled for security reasons in [/ourpath]/cms/install/lib/classes/CMSUpgradePage2.class.php on line 51

Reinstalling a fresh CMS also results in a broken admin panel.

I can't get the admin panel back to normal. Can someone help?

[Somebody_1]

What do you mean by the admin panel is messed up. Do you get an error?

Turn on debug in the config file and see if that gives you any clues.

[Rolf]

The admin panel is messed up. The same happens when I add a bad script. This is the result:
http://www.radiocollectie.nl/CMS/admin/login.php

Looks fine to me... Problem solved or do you still need some help with this?

Rolf 

[Dr.CSS]

Most likely the inside once you login is messed up, the host probably did some upgrade or turned on safe mode, if you can get to it look at system info page for yellow ! or red X...