DB Error: Bad SQL Query

[k1lljoy]

Hi! I have a 1.7.4 version installed. My hosting provider updated the PHP & MySQL versions on the server, both to 5 today.
And after that visiting the site I get lots of errors such as:

DB Error: Bad SQL Query: ...
Unknown column 'i.user_id' in 'on clause'

etc. 

The site address You may view in my profile. Thanx in advance for your help 

[Nicky]

MySQL5 is running > http://www.4homepages.de/forum/index.php?topic=10184.15