> I was wondering if Haukur and others in the know, have an opinion on the
> English translation of Rasmus Rask's Old Icelandic Grammar?

Since I've never seen a copy I'm unable to comment :)

Rask, of course, was a pioneer in the field and while much
of what he contributed is now obsolete he unquestionably
did know Icelandic.

Kveðja,
Haukur