> four months without updates for an open source app
> seem quite a lot, especially when there are some
> severe bugs still to be solved.

Humm, most severe ones were spotted imho - what important issues are you
thinking about ?
> Question is: is Xavier still working actively on
> this project or is him swamped by other activities

I'm a bit swamped by many other activities, but I have still some (bit of)
time for httrack. The only problem is to priorize most important tasks (ie.
bugs)