Performance problems with Evolution 2.0.2 Calendar - help ?

Hello,

i am experiencing Performance problems using wthe calender with
Evolution 2.0.2.
It takes an awfull amount of time to load the meetings in the calendar
after selecting the calendar button, and when i change of week or month
or day in whatever display view, the cpu goes up at 100% and it takes
about 15-20 seconds to display...

My calendar file is quite big has i have historical data meeting since
2001, but Evolution 1.4 had the same data volume, but no performance
issue...
I run Red Hat Enterprise Linux 4

can someone help or advise ?

Thanks
Franz