Yeah alot of us have that problem with the lowdifficultyshare. It gets fixed for me after 15 min when the miner reconnect with the pool (dwarfpool). Not sure if a pool issue or a miner issue. Dwarf is doing some changes with their site, maybe their ports too.
okay, I'm seeing some of these lowdifficultyshares also with 9.6, but with 9.7 there are a lot more - can you confirm that 9.6 is doing it's work better?