Basically, if Safari is crashing for you in 10.3.9 (or after any future system update), and you've eliminated the usual suspects such as a bad preferences file, it's likely caused by an "input manager" add-on that you have installed. For instance, both AcidSearch and Saft use the Input Manager interface -- and their pre-10.3.9 versions will cause Safari to crash.
To fix the crashes, first find out what you might have installed. You can find the Input Managers in a number of locations:
- At both the top-level and in your user's folder, check the Library: InputManagers folder
- The top-level Library: Application Support: SIMBL folder

