Seems there is a problem with Meeroos and the Interest List updates. Andrew Linden has been working on it, so a fix is close. Apparently there was a problem with an earlier fix crashing the server. Andrew is testing his current fix today, Tuesday.
The Problem is seen when you turn your back on a herd of Meeroos. After a few seconds when you turn around the viewer updates their position. But, the head and body of a Meeroo may not update at the same time. You see a head take off then later the body catches up. Not exactly conducive to building an immersive experience.