Hoho this made me laugh. There isn't a "Microsoft Knows Best" switch as such, what I meant by that was all the Preferences that do things automatically. These can be a huge drain on resource, because the program is constantly looking for things to improve or check. In other words go to preferences and turn of everything that probably uses the word "Automatically...(do something)".
As further update on my post, I did get to the root cause of the problem, and although the above helped eventually I got the problem back so the above isn't the solution.
Basically there appears to be a conflict with the fonts that Microsoft uses when you install Office, and the fonts that may already be installed on your mac.
Firstly the mac has a default set of fonts that you cannot and should not remove. These are found under Macintosh HD>System>Library>Fonts.
These fonts apply to all users in the system.
Then there is the next level of fonts, that you may have purchased, or had installed by various programs. These are found on
Macintosh HD>Library>Fonts
This is where I found the conflict. I removed all the fonts from this folder (putting them in a temp folder on the desktop) and microsoft office ran like a dream immediately. I then put each one back one-by-one until I had identified the offending fonts, which by the way came from an older installation of office. I cannot recal them now because they've all been permanently deleted from my system.
There is another layer of fonts under each user just for completeness:
Macintosh HD>Users>yourusername>Library>Fonts
And you should check here too. I basically put all the fonts I found here into the folder in the desktop, and when they got put back it was at the level
Macintosh HD>Library>Fonts.
Hope that helps
Chris D'Costa
http://blog.sossee.com