Hi, please do not forget to bump minimal libc6 requirements to "libc6 (>= 2.10)" in libc6.symbols.hppa similarly as in libc6.symbols.sparc. The hppa NPTL switch is 100% *** backward *** compatible. The pthread static initializers compiled against NPTL will not work against linuxthreads (e)glibc. Bump at least libpthread.so.0 and libthread_db.so.1 or be cautious and bump all libraries. Petr