Q: I cannot run any DJGPP program on my ThinkPad! They all cause
the Windows DOS box to crash with a message about a General Protection
Exception at some cryptic addres like 0277:0044!
A: This is a known problem with the ThinkPad: it is supplied with a
set of PCMCIA device drivers from CardWorks that conflict with many
DOS-extended programs, not only DJGPP (the CardWorks README file
mentions problems with PKZIP which also uses protected-mode
instructions).
The only known solution is to uninstall the PCMCIA drivers. Obvioulsy, this is a solution only if you don't actually use any of the PCMCIA devices.