So upx is definitely worth it, right? Unless I misread it the decompressor is assembly. We have a PPC port going on. I do see the 2-1 compression but in 256KB we have oodles of room (with etherboot), so I'm just trying to make sure the added complexity in the build is something we want. Is it easily turned off? thanks ron p.s. I know I promised not to distract you, sorry :-)