We have started to force the Office 2010 Service Pack 2 installation to all our managed PCs since 29 August.

Once the install has finished, the next time that Outlook is opened, you may experience sluggish opening of your InBox, if a re-index for Search occurs.

Also, PCs may run more slowly whilst the install is running.

Office 2010 SP2 has been available since end of July and contains significant bug and performance fixes.  We normally push current Office SP to desktops around this time every year.

The only known issues with SP2 are not relevant, as they apply only to Server 2003.