Not being a Mac user I got caught out when a user on my blog wasn't seeing the Visual Rich Editor. I even patiently wrote a How To (with pictures) on how to activate it ...
Have subsequently learnt it's a bug in Safari. Searching through the forums before this gem of info came to the fore, quite a few posts on this topic had input from users saying what worked for them and what didn't.
Could I ask all Mac users who use the Visual Rich Editor to please give some feedback here on what browser they're using and its version? Do you use the built in WordPress version or a plugin?
Any other info you think is relevant here is appreciated.