By its very nature, a theory is an unproven idea, so any of Einstein's theories remain unproven...either correct or incorrect. They have provided the basis for many other theories or sciences which in themselves may 'prove' or 'disprove' his theories, but again, these are just theories themselves and cannot therefore prove or disprove anything. A famous example of a theory being accepted as trus is the theory of Evolution which has yet to be proven or disproved yet has alternative (just as valid) theories. Some of the details of this theory have been proven false, but the general theory still remains a possibility, just as any other... such as the Creationist theories out there. With Einstein's theories, many of them are described in mathematical terms. What some people forget, is that maths is just another language which by it's nature is an artificial construct to describe its environment. While Einstein's theories may be mathematically sound (and some are not beleived to be so wholly today), the jury is still out on the validy of maths (and phisics) itself. This is why theories such as Einsteins and Evolution spawn more complex, detailed (and sometimes theoretical) meta-maths or meta-sciences.

actually one theory of einstein's that was proven inaccurate was his theory that light existed as particles. he was the one to disprove his own original theory and much to his dismay had to settle on the theory of light's duality (its ability to be perceived as a wave part of the time and as particles part of the time).

Einstein hypothesized that there must be a force that keeps the universe steady (otherwise, he knew, it would either expand to infinity or collapse under its own gravity). When Edwin Hubble discovered that the universe was indeed expanding, Einstein declared this to be "the greatest blunder of my life."

At the time Einstein was writing one of his papers, big bang theory had not yet come about, and the concept that the universe was expanding was unacknowledged. But the laws of motion that his paper described suggested that all cosmological bodies in the universe were moving away from each other. Embarrassed by this, Einstein fudged the numbers and wrote a "cosmological constant" into his equations. When it turned out (to everyone) that the universe WAS expanding, the "cosmological constant" was removed. Einstein called his "biggest blunder". I call it "That dude is so smart, even when he's wrong, he's right." Einstein should have trusted his math in the first place and just been all, "By the way, the universe is expanding and stuff."

So far many experiments have been done that support Einsteins theories, while non have disproved. Heres one from three years ago http://www.sciencedaily.com/releases/2005/11/051110090022.htm His theories predict that gravity will bend light, which was observed back in 1919. Also they predict time dilation one example is that time ticks slower next to a large gravitational field. This was proven true by placing a atomic clock on earth and one in orbit. The one on earth ticks slower. Without the insight of these natural laws GPS would be off by yards instead of accurate to a couple of feet(if not more). There are far more advanced prediction the Einsteins theories make and which many have been proven. You'll need to search Google more but its all there. Just to clear up a point a theory is way to describe a set of facts and observations. It must be able to make predictions which if go unfulfilled would end the theories use. In science a theory is the highest level of understanding.

THe flat earth was once a theory and a good one for its time. Our beliefs that we understand anything is the reason why we do not. The 1919 eclipse is said to proove the correction to the Cavendish-Newton formula of the bending of light by gravity. Eddington was a biased party. These expiriments have been redone with similar but widely varying results. Master the math if you want to know if it is fact. Gps satelites are set fast as the clocks run slow enough to give a 7.45 mile variance per day otherwise. This is said to be on account of relativity. This math is good but lacking basis from Einstein. There are then the Muons said to dialate time as their rate of decay is less than the travel time from their creation in the upper atmosphere to the ground yet we register a larger sample size at the ground than predicted. A lot of the issues with Einsteins theories are from everyone else's interpretations and the fact his ideas are ahead of the needed math.. that is losing the increasingly complicated calculus and maintianing algebra.