I have the same issue...
well at least I'm not alone...
My last block was 10 hours ago, seem stuck on block 72161, was there a new wallet ?
There is a new wallet for Linux available already; Windows and other OS'es are in the making.
The only change is that the wallet will not combine as many inputs, so more inputs remain available and more blocks will be generated,
which will help the network go back to a normal staking routine instead of what happened last night with 12 hours no block until
finally someone brought another wallet online. Ouch!
From time to time you will see a string of a dozen or so blocks quickly following each other, with long periods of waiting in between.
That is because all wallets have fallen into the state where they combine inputs into ~1000 GAM blocks so a wallet with 10,000 GAM will only produce ~10 blocks and then it will need 500 blocks generated by other wallets before those blocks come back out of staking.
The new threshold has been set to 50 GAM, so first the wallet will split inputs in 2 until they reach the new target size and then a 10,000 GAM wallet will generate approx 200 blocks so even if only a few wallets are staking, the network keeps ticking. Today there is need of more than 500,000 GAM being staking at the same time for the network to keep going, due to the 1000 GAM block size and the 510 confirm maturity threshold. So, you can also see that burning GAM would increase the problem and the block value target needed to be lowered to keep enough blocks going.
There is a link to the Linux wallets on the Gambit slack and I hope that Windows is soon available as well.