Google Font rendering in IE7

I'm finding some inconsistency when using the Google Fonts on my site.

I'm importing开发者_JAVA技巧 Arvo Regular and Bold into my site and find that IE 7 is not rendering the fonts as I would expect every time. The first example is how I want it to display.

Example 1

The second example seems to be loading the font, but instead the regular variant. It seems to be random which version will display each time.

Example 2

As you would figure I want it to display like example 1 every time instead of it being a gamble that it will actually load the proper font each time.