passed drc at batchpcb & eagle, but viewplot & viewm

I’ve submitted my first board (4 layer) to batchPCB. It passed the DRC. It also passed the drc in Eagle. Yet, when I look at the gerber files for both the internal layers & they show some via’s & pads overlapping. Even zooming in close, still showed an overlap. In eagle, there is separation between the pads & via’s. Is this something about which to be concerned?

A bug in Viewmate once caused me lots of problems with Olimex - they kept rejecting my files which were perfectly OK according to my PCB software and GC-Prevue.

Leon