There are several facets to the things that you're describing, only one of which is an actual _bug_ in the game (for some unknown reason, and it's rare to see it happen, the villagers' names can change). Zylador's description of the village elder is correct. The more villagers you have, the more your village elder will be interrupted, since he or she will be sought out more frequently as the population grows.

The nursing moms and the children's ages are a different phenomenon. There are a lot of complex timers in the game, and they are all affected by game speed and your computer's system clock. Under normal circumstances, the nursing timer is based on game speed. At 2x speed, it has a nursing time of 120 minutes. At normal game speed it's 240 minutes. The nursing timer displays a very large number when the game is paused, but will return to normal when you unpause the game.

Without more information, it would be difficult to say exactly what's causing your situation, however it sounds like something we see frequently when people try to make the game progress more quickly by adjusting their computer’s system clock. While that sort of “time travel” is a popular way to speed up game play, real-time games rely on the accuracy of the computer’s system clock to operate properly. Unpredictable results can occur if adjustments are made to the clock, especially moving the clock backwards in time. Different games will respond differently under those circumstances, ranging from minor statistics anomalies to killing whatever is living in the game. Virtual Villagers has a much more complex real-time engine than Fish Tycoon, and you're much more likely to see problems with it when adjusting the system clock.

While many people do adjust their system clocks to speed up play, doing so affects far more than just the games. Every application in your computer is affected, including the file system and Windows system applications. For all of those reasons, we don’t recommend changing your computer’s system clock to speed up game play.
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