Not really. The point of Apple releasing 4.3.4 was to PREVENT the jailbreak on 4.3.3! It takes a lot of time and effort to develop a jailbreak for the A5. The teams concentrated on IOS 5.0 which was very close at the time, rather than spending months trying to crack 4.3.4 and 4.3.5 (which were released within a couple of weeks of each other) for very little reward.
And its VERY unusual to find an old iPad stuck on 4.3.5 today! It means it has not been updated since July 2011!