happens for 3 reasons USUALLY.
1 Your chain is jacked (if thats the case if your on windows hit windowskey + r then type %appdata% and hit enter. go to your Choofcoin folder and delete everything EXCEPT WALLET.DAT (DO NOT DELETE WALLET.DAT) and restart the wallet. (on linux go to your home folder and hit ctrl + h and then go to the .choofcoin dir and do same as if it was windows)
2 The chain may not be moving (either the Diff is way too high,no one is mining or getting POS blocks).
3 Too many nodes with fucked forks so your always getting a forked chain.

Most likely the chain has just stalled to mega diff. but who knows.