Hi, I have an userland application that uses pthreads and crashes with a segmentaion due to an "unaligned access in function 'emulate_load_store_insn' ". The processor is an r4k and the application is being compiled with mips2 switch, which I thought would allow it to generate the ll/sc instructions natively and not have to generate system calls to emulate it. I am guessing this is because the pthread library I have is from the sgi ftp site and it was compiled for mips1 ?? If someone has any insight into how to get libpthread to use ll/sc instructions instead of the mips system call I would really appreciate hearing from them. Also if anyone can "put me straight" on what is happening I'd equally appreciate it. Wayne __________________________________________________ Do you Yahoo!? U2 on LAUNCH - Exclusive greatest hits videos http://launch.yahoo.com/u2