Christopher, If i run msp430-size over the binaries, the sum of sizes for .bss is 62. May be i'm not reading it right...
ADMRED-25459# msp430-size *.o text data bss dec hex filename 626 6 12 644 284 canon_stand_alone.o 4366 0 0 4366 110e driver.o 54 6 0 60 3c file.o 90 0 0 90 5a math.o 28990 3716 50 32756 7ff4 rs274ngc.o ADMRED-25459#