David Storey reports that :first-of-type:first-letter ignores the :first-of-type component, mistakenly selecting every element.
Using latest nightly r29933 the problem seems gone. Nicholas, can you confirm that the bug is already fixed?
Created attachment 29659 [details]
This passes with Safari 4, and I believe is a test case for the described bug.
Looks like this was fixed a long time ago.