Digital BW, The Print

I've used spongeless carts in both a 1270 and a 1280 for over a year 
or so.  Some time ago the 1280 loaded with color inks seems to have 
spilled it's guts (ink) out through the bottom and pooled.  The 1270 
is doing the same to my B&W inks but the ink hasn't pooled underneath 
the printer.  I wasn't sure what was up so I went to new carts, fresh 
loaded and primed yet the printer is still dropping it's ink.

There's nothing obviously wrong without having taken the printer 
apart, i.e. using a flashlight looking under the rest area for the 
print head.

Clues? 

Thanks,
Cleavis