Ensure Office 2007 is fully patched as well as the PC.
Solution 1: Rename or delete outcmd.dat, extend.dat, views.dat, the .srs
file, and
frmcache.dat. Outlook will recreate these files as needed. Do this while
Outlook is closed.
Solution 2: Create a new PST if you use one. Although the Outlook 2007 PST
is essentially identical to the PST format new to Outlook 2003, Outlook 2007
writes additional data to the PST.
Solution 3: Create a new profile. No need to delete the old profile just
yet, just make a new one to see if this resolves anything. If you upgraded
from an older version of Outlook, then it's highly recommended you create a
new profile.
Solution 4: Disable Outlook Setup Add-in (Cyberlink). This is the Instant
Office add-in on Dell computers that have Media Direct installed. This
add-in is responsible for converting meeting requests to recurring meetings.
If you're not using a Dell with Media Direct installed, this is not pertinent
for you.
Here is another thing that might slow Outlook down as well:
Instant messenger. The fix is to disable the link to Instant Messenger on
Outlook's Tools, Options, Other tab.
