My experience also. Why Canon will not keep using the much more stable and faster CF cards is a mystery to me. It just confirms my suspicions that the 60D is a reworked Rebel rather than an updated 50D.
Anyhow I bought the Lexar 32GB Professional (rather than one of the 64Gb SDXC which my iMac computer would not recognize) and am using my old 16GB Lexar Professional CF card for file storage. I figure that with the inclusion of a HD video function, we need all the memory we can get.
By the way, the corresponding 32GB Lexar Professional CF card is almost exactly 2X the speed of the SD!