The pool Im connected to is still submitting to the network and getting ether, so i hope its nothing serious. But the difficulty went down from 75k to 60 (so we have 20% less)
Maybe a data centre or pool has gone offline or something then?
That means that there will probably be some small effect on the network.
If it's a few nodes that have gone down, then, when they come back online the network will go back to normal.
The problem is probably OP's configuration or the pool they use.
Every pool i checked had a hash rate drop. Someone knows something about it ?
Now that is an odd thing to happen.
There appears to be speculation on DoS attacks [https://forum.ethereum.org/categories/mining], that would potentially slow down the network.