Marketing press and safari

Boy this is so wierd.

I have a multisite system and in one of the blogs where I have marketing press installed there are some wierd things happening. But only in one type of browser computer system.MAC and Safari

1. In safari for mac, the grid view only shows two across instead of four

2.When a user ads an intem to the cart it shows but them ads a second item that they didnt use.

3. So we empty cart and add just one product and then it shows up again with the two products. is the domain and very crazy is it just a safari thing or am I missing something?