Has anyone figured out how to preload the fonts to stop the flicker/delay?
There has been a lot of discussion regarding this issue which Paul Irish calls FOUT (flash of unstyled text). There are numerous ways to limit this by
1 Putting CSS at the very top of the page before any script tags
2 Minimizing the size of the font file
3 Browser Caching with far future expires headers
4 Gziping your CSS and font file (WOFF can't be gzipped)
Paul Irish has a great article about this: Fighting the @font-face FOUT
Steve Souders also has a great article on his High Performance Websites blog: @font-face and performance