That has fixed the problem.
At least the AF debugger info mode now does what was intended.

Would be interested to hear any feedback from stalk users - I am finding stalk response time extremely variable under 2.0, don't think this is a hijack related issue. Sometimes the stalk response time is perfectly acceptable, at other times it can take up to five seconds to respond to a stalk command, at other times it doesn't respond at all.

Toby