BTW, Same for me. I don't stake NAV very often but I did leave the wallet open yesterday and no stakes since 6AM UK time, about 8 hours ago.
Same here!!!! Not staking at all today....
Exactly.
After block 641176 at 2014-11-15 06:44:38 UTC, the posdiff had a progressive dive,
it is gone from a mean of 0.028 down to 0.000244, probably due to a user with the wrong system clock.
So, a great number of block has been generated in a rush, more of 400 in 1 hour.
After this, one user have generated another 1000 consecutive block, the new topstaker of the week.
His long run is started at 2014-11-15 07:22:49 UTC, 652ddbe43f81dac5e2dcd58366d0959f503bcc9601d0ce9f88fcfaccce37a111, 641612.
Now the posdiff is recovering to more reasonable level.
But PLEASE
check your system clock... especially the owner of address sYda5naMu.