@5600K: Can you check if the Nouveau Kernel Driver might be still enabled for some reason? 

https://askubuntu.com/questions/112302/how-do-i-disable-the-nouveau-kernel-driver

The last Mona block was found 7 hours ago. Your shares will be paid out once the next block is found. Please take the time to read the FAQ.

@kuddelbard: What's your wallet address? I could take a look what's wrong.

@Jaccob: Balance is not sluggish. It takes 102 confirmations after a block is found to make it eglible for payout, where one confirmation equals a block. 102 blocks take a couple hours to get mined. You can confirm that yourself using any public blockchain explorer for your coin. This works the same for every pool - unless they are taking the risk of paying out orphaned blocks in which case the pool operator would have compensate the pool for the full block reward from his own funds.

andy: We had a couple of very quick pool restarts today to improve some parts of the site. Whenever that happens, miner hashrates get reset to zero until they get updated 10 minutes later. This needs to improve.

andy: Could you post your wallet address? Alternatively mail it to info@poolmining.org

It's a temporary issue that will be resolved in a couple minutes.

These days pretty much all miners get flagged by AV because some assholes keep modifying the executables to spread malware. The only solution is to get the miners from reputable sources and pre-configure a special download directory to off-limits for your AV.

Ok, great that you got it sorted.