I think Darth Mallwalker covered that in the bug reports thread (page 1 or 2)–there was a GOUT sync issue, two frames toward the end, but I think it was in a workprint, not the final version.
Wasn’t that Jedi?
I think he may have listed some for each film, but I don’t recall precisely. I think most of his errors are sort of self contained GOUT mismatches, in that shots are off by a frame but the sync error doesn’t persist throughout the film.
SW 2.5 has an extra frame at Yavin base, but it’s generally ignored since it only means the last 20 minutes are a frame off. ESB, I’m quite sure, is off by a frame very early on, perhaps even the crawl, which is why there were instructions for remuxing with a time shift when 2.0 first came out. The answer should be in this very thread. Somewhere.