As I've said many times before here in the Forum, it's not nvu you want, but rather kompozer, the nvu bugfix fork. Nvu was abandoned at 1.0 in a VERY buggy state, it's developer, glazman, is said to be working on Mozilla Composer 2, as a completely different codebase, almost from scratch (you figure out how long that's likely to take...

). Meanwhile, kaze has been steadily squashing the bugs and releasing kompozer. After a somewhat ugly attempt to squash kompozer, glazman has recently posted that kaze is now officially working with him, though it's not quite clear if he will be working on nvu 1.x releases, or on Composer 2.