Should be fine now for all miners that couldn't connect.

We have raised minimal difficulties for both providers and buyers. Providers can now use diff 128 or higher for scrypt, nscrypt, sha256 and keccak, 0.04 or higher for x11 and x13.

Buyers have to use pools that support min diff 32 for scrypt, nscrypt, sha256 and keccak. We are in era of fast ASIC and it is simply unacceptable for pools to still have so low difficulties (imagine how many diff 32 shares a 80MH/s scrypt ASIC sends, if one simple 500KH/s card can already produce 1 share per 10 seconds). If your favorite pool does not support higher diffs, we suggest you to contact them and explain that they are loosing important money on fees that they could gain when just increasing their diff (which is one setting in config file).