With qemu d18373181f3445f5a028ca18d0cd90a3d9c9ad8f (Wed Mar 31 14:51:05 2010 +0300) getting:
$ ./qemu/arm-softmmu/qemu-system-arm -M n900 -mtdblock meego-codedrop-arm-n900-201003311614.ubiimg -serial stdio -clock unix
I do not have IMEI to download
qemu: hardware error: no boot device found
[...]
Aborted (core dumped)
meego_qemu_nand.img but I do not think it is the reason.