Could it be that fees are too low for some of these and they are taking a long time. It could be that it just happens to be happening all at one time by coincidence or that miners are refusing to confirm them collectively.
Yeah, it could be. But probably is not. How close to maximum theoretical capacity do you think is realistic?
I call it a bitcoin fail, it just simply cannot scale to the current usage. Thanks.
*Current usage*? Not really. The combination used in the attack is actually quite smart:
1) Use a good amount of quantity and slowly increase over the course of 2 days.
2) Use unusually large transactions with a lot of input scripts. These transactions tend to be larger e.g. 1kb. The effect that this does is that miners tend to mine more blocks with less transactions (1k or lower). As a result the ever growing backlog becomes much worse than it is.
You can see some dormant addresses that suddenly created over 1 thousand (multisignature transactions) over the course of 2 days each.