what version/service pack are you using?
what type of simulation are you running?
does this happen to all yoru files?
what operating system are you running?
the reason i ask is because i'm using 2014 sp0.0 and I don't think that is the current behavior. but i think i may have seen it before in previous versions.
-Any simulation and/or file (mostly static), as it just seems to be meshing-related. I think it's more prevalent when using curve-based mesh, but can't say for certain.
I did find an article in a PC blog relating to it, just did it so not sure if it works yet (will report later). It's for XP, but wouldn't imagine that feature has changed much: