It is the dust bunnies on sensor that get me...I really have not had a problem with the bunnies after having a DSLR for a while..perhaps some is factory leftovers.

By all means, if you happen to try "pinhole" shooting with a DSLR, cover the camera lens opening very tightly and cover the pinhole with a clear glass.  Not doing so even with a hole of about 0.3mm gave me fits with tiny bunnies on images taken later.

A reminder on lens cleaning is always good.  Thanks.  I take a quick look but not a thorough one sometimes.         Tom.