Broken panel interface

[CliveR952]

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PRODUCT, VERSION, MICROUPDATE, OPERATING SYSTEM, ARCHITECTURE
Plesk 10.1.1, Ubuntu 10.04, OS Template: ubuntu-10.04-x86_64
PROBLEM DESCRIPTION
All pages, including login page, are without graphics and formatting. I can login and access some of the tools, but cannot for example get to the domain control panels (blank page)

STEPS TO REPRODUCE
Login
ACTUAL RESULT


EXPECTED RESULT

ANY ADDITIONAL INFORMATION
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