I cannot give an accurate answer to that unless I know what the issue is and how to correct it. =)
But come on, how often is there really a problem with "MS Office" itself, one that would affect all users? I don't think I've ever had an issue where I had to go and re-install (or whatever) every single instance of MS Office, except one time which was discussed earlier.
I can understand your excitement toward this new "online office" but this is NOT the best example to base your arguments on.
And this does not address the security issue which could be disastrous for a person or entity that has confidential info flying across the 'net.