there's a bootstrap available
https://www.dropbox.com/sh/ybddgds0rws9idk/AABf10JXK6jFAFwb-Imn5cfba?dl=0download the newest version (i have uploaded a new version
i'll try and update i teh next few hours to current)
unzip.
rename to bootstrap.dat
put it in yr datadirectory and start yr wallet.
when it finishes it will rename it to bootstrap.dat.old (or something similar)
sometimes it doesnt sync all the way, if it doesnt, you can rename to bootstrap.dat and repeat the process..
also sometimes the wallet will only sync (from the network) in blocks of 500, annoying, but you can restart it repeatedly until it starts syncing properly again :p
i'm also working on a blockchain snapshot, which will be much easier to handle (and sync) than the bootstrap
(i hit a snag with ubuntu default versioning of berkely db being incompatible with the qt versioning).
..
it does look like some fork action has occurred .. how to check if yr forked.
(basically, compare your blockhash with another blockhash - if they're differnt, you're forked)
go to debug page, see what yr last block is eg 905222
go to console, enter
go to bumba explorer
http://blockchain.bumbacoin.com/enter the output above (ie the blockhash in the console output) into the search field and press return
if you're on a fork, your blockhash will be different to the explorer AND the explorer will not be able to find your hash
alternatively, enter the block number into the search field, you can see the blockhash on the explorer where it says
BUMBA block: f9600fde25a0eeae0827a43c1cd84d65cbcf8580a29aca0788060ee014dc6ace
see if it matches yours.