I’m running Eclipse 3.5 and I’m trying to set an “Instance Breakpoint”. I’ve hit a breakpoint in the debugger, and from the Variables view, I right-click on the object instance I want to set a breakpoint for and click on “Instance Breakpoints…”
Then, I get this:

Google give me nothing but a few links that point to the message bundles that contain that message in the source code.
How can I set a breakpoint on the specific object instance I care about?
You have to have a breakpoint (or watchpoint) where the type of the instance you’re trying to break on is going to be in the stack. If one or more such breakpoints exist, then a dialog pops up letting you select the ones that you want to restrict to only apply to the given object instance.
A “watch this instance” feature that automatically sets a watchpoint that only applies to the selected object instance would have been nice too, but at least you can do it.