Outlook 2007 constantly using 50% + CPU resources

I have a problem with Outlook constantly using 50% or more CPU resources. When I restart my computer everything seem to work fine for a while and then after a few hours I hear my CPU fan picking up and it stays like that for the most part. When I check the the CPU processes Outlook is at 50% or more constantly.
It seems to be related to search indexing but I'm not sure why. When the CPU resources are high for Outlook when I switch between folders in Outlook it takes 10+ seconds until the contend will display. This has been an ongoing problem since I upgraded to Outlook 2007 a few months ago.
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BusbarSolutions ArchitectCommented:
make sure that windows and office are patched with the latest updates and service packs.
make sure the your AV is not scanning the PST files.
try, if not what about creating a new profile and testing how outlook behaves

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GerhardpetAuthor Commented:
I have all the latest patches and service packs install
No PST files...it is connected to exchange in cache mode
I will try to create a new profile and see if that will solve the problem
GerhardpetAuthor Commented:
I did delete the profile and create a new one which seems to have solved the problem but know I get event 1000 and Outlook carches which it did not before.

Here is the event log

Event Type:      Error
Event Source:      Microsoft Office 12
Event Category:      None
Event ID:      1000
Date:            4/28/2010
Time:            3:21:02 AM
User:            N/A
Computer:      GERHARDP01
Faulting application outlook.exe, version 12.0.6514.5000, stamp 4a89dc70, faulting module unknown, version, stamp 00000000, debug? 0, fault address 0x00000000.

Any ideas why?
BusbarSolutions ArchitectCommented:
can you try to re-install outlook and re-apply the service pack
GerhardpetAuthor Commented:
I did a repair and that seems to have solved the problem. Thank you for your help!
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