possible problem with count (*) in ASE 15.5

We have noticed that in rare occasions the count(*) on a stable table (in which there are not lots of inserts, updates, deletes) the count(*) returns a count which is a few records less than expected (instead of 1,412,444 which returned normally on a given table, we sometimes buit rarely get 1,412,439 for example).

Has anyone else noticed such an anomaly?

A.N