Here are some benchmarks from the Height problem.
One of my CPUs on Block 2300 now hashes at 8.3H/s, while at Block 23000 it will hash at 1.35H/s. This doesn't take into account the difficulty changes by then. Every CPU will linearly follow this pattern.
I have a question...
I understand it will be increasingly more complex to produce a single hash. Some people see a problem in that, and expect the chain to stop at some point.
However, if hashes are be produced less often, the blocks will be found less often, the difficulty will decrease, and block will be found again, just with less hashes contributed. Is this correct?
So in short, difficulty decrease will compensate for the increased complexity of producing a hash. Doesn't this mean there is no problem at all?