The Hebrew Spelling Service and Mac OS X Snow Leopard
If you are using Mac OS X v10.6 Snow Leopard with the Hebrew Spelling Service installed, you may notice that Hebrew spell checking is not working, and that the system is unresponsive when entering text. This can be resolved by updating to version 1.6 or later of the Hebrew Spelling Service.
Hebrew Spelling Service (1MB disk image including Read Me files in English and in Hebrew)