If there is only a few people staking (most likely that is the cause) and those people turn off their wallet then no POS blocks are being generated. I believe the major problem at this moment is that a lot of coins are still on Yobit and only a few people are staking, and then it can take a long time indeed.
OK, but the difficulty is low enough that I should be staking with no problem. The likelihood of me going 2+ hours without staking on a difficulty of 0.00024414 is highly unlikely. I should have something like a 94% probability to stake within 10 minutes having 5,000 mature coins at that difficulty.
Also, the probability of a large number of people who have coins to stake all closing their clients in the past 2 hours is astronomical. Why would anyone close their client when it's assumable they have coins to stake?