I've played FF quite a bit over the past year and really enjoy it, I played and picked up 2nd edition at Historicon this past Summer, and honestly there is not a ton of changes from the 1st edition.
It is a handful of minor rule changes, does not change the overall feel of the first edition at all.
Also, if you are active on the FF yahoo group, I believe there is someone with a detailed errata/changelog that if you asked would send over.