Why my DL time so long years

hello , any one can help? so crazy …i plot 12TB drives, use pool burst.cryptoguru.org
but why Dl is so long " KEWH-C52C-LU7L-3WZHK 377303 years 0.00 [ 6 ]"…
and from the blagoMinner

14:15:50 New block 441523, baseTarget 157180, netDiff 116587 Tb
14:15:56 [ 1783421401221870479] found DL: 64731371
14:15:56 [ 1783421401221870479] sent DL: 64731371 749d 04:56:11
14:15:59 [ 1783421401221870479] confirmed DL: 110528215787829 1279261756d 19:17:09
----Fast block or corrupted file?----
Sent deadline: 64731371
Server’s deadline: 110528215787829

what happen ? Thank you for any one who can answer me

Have the same question/problem.