Hi, I googled and found a similar problem http://linmodems.technion.ac.il/bigarch/archive-eighth/msg02794.html Have you a solution for this? Please, found below the make.log results. CC vuart.o LD binary.a make -C /lib/modules/2.6.26-1-486/build M=/usr/src/pctel-0.9.7-9-rht-9/src make[1]: Entrando no diretório `/usr/src/linux-headers-2.6.26-1-486' LD /usr/src/pctel-0.9.7-9-rht-9/src/built-in.o CC [M] /usr/src/pctel-0.9.7-9-rht-9/src/linmodem-2.6.o CC [M] /usr/src/pctel-0.9.7-9-rht-9/src/ptserial-2.6.o /usr/src/pctel-0.9.7-9-rht-9/src/ptserial-2.6.c: In function 'pctel_interrupt': /usr/src/pctel-0.9.7-9-rht-9/src/ptserial-2.6.c:135: error: storage size of 'i387' isn't known /usr/src/pctel-0.9.7-9-rht-9/src/ptserial-2.6.c:135: warning: unused variable 'i387' /usr/src/pctel-0.9.7-9-rht-9/src/ptserial-2.6.c:155: error: invalid lvalue in asm output 0 /usr/src/pctel-0.9.7-9-rht-9/src/ptserial-2.6.c:187: error: memory input 0 is not directly addressable make[2]: ** [/usr/src/pctel-0.9.7-9-rht-9/src/ptserial-2.6.o] Erro 1 make[1]: ** [_module_/usr/src/pctel-0.9.7-9-rht-9/src] Erro 2 make[1]: Saindo do diretório `/usr/src/linux-headers-2.6.26-1-486' make: ** [all] Erro 2 Thank you very much! -- Marcelo Luiz de Laia Jaboticabal - SP - Brazil sip:marcelolaia@xxxxxxxxx "Você vê as coisas como elas são e pergunta: por quê? Mas eu sonho com coisas que nunca foram e pergunto: por que não? " - Bernard Shaw