Not to me- but I'd try disconnecting your alternator to see if you've
got a failed diode or diodes in there causing the drain.

hi dave,
I usually start with disconnecting the neg. batt cable and hooking a
test light between the battery and the neg. batt cable. This will
luminate the test light. Then, I position it where I can see it from
the fusebox(es) then I start unplugging, and plugging back in.
The computers will take a lil juice, so when you hit the big draw
fuse, the test light will go to dim.
Common problems are alarm systems malfunctioning, glovebox light,
under hood light, bad radio install, aux. lighting, or aux. accesories
such as radar detectors, gps units, or cell phone items.
Your post says sevral amps, and youve done what I would start with, so
next would be to disconnect the alternator, to check for diode issues.
Please let us know how you make out.