Conversions half in Safari

Piwik is telling me my conversion rate in Safari is about half of what it is in the other major browsers, and over half of my visitors use Safari. The low conversion rate looks to be consistent across all versions of Safari. 5.1 is a little better, but 4.0, 5.0, and 6.0 are all bad.

I know this isn’t much to go on, but does anyone have a hypothesis?

Apple users are a bunch of tight ***es? The page doesn’t work as well in Safari? Apple users like an Apple-like design, which this isn’t? Very hard to say. You are welcome to post a link if you think it will help.

I think it’s mobile Safari users getting mixed into the stats, as well as MacOS Safari’s propensity to preload.