Fix my server issues after updating to Plesk 10.1.1 f

I am running CentOs5 and Parallels Plesk Panel, after updating from 10.0.1 to 10.1.1. the Apache server runs at 100% CPU time and my website is not available. KnowledgeTree is installed on that website. I would also need you to clean up my server from unneeded files and folders. Deliverables: [login to view URL] my website with the full KnowledgeTree installation running again 2. Clean up the server folders from unneeded files like old install files, temp files, etc. Cheers, Markus