Hi Khalid,
The best place for you to start with issues such as these would be to make sure that you have the most current hot fixes applied to each of the ProClarity products that you have installed. They are located here: http://www.microsoft.com/downloads/results.aspx?pocId=&freetext=proclarity%206.3.2215&DisplayLang=en
Once you have applied the ProClarity Analytics Server (if you're using it of course) and Professional hot fixes, you may experience some performance gain or even success, but this may be more about Analysis Services (SSAS) cube design or performance. You will want to make sure that your SQL/SSAS is at SP2, then take a look at the SSAS Performance Guide, which is located here: download.microsoft.com/download/8/5/e/85eea4fa-b3bb-4426-97d0-7f7151b2011c/SSAS2005PerfGuide.doc
Hope this helps,
Bob