po upgrade glibc (v mojom pripade debian+grsec) polovicka sluzieb (apache,ftpd, samba...) nenabehla. Takmer kazdy program z /usr/sbin /sbin /bin koncil nejak takto:
darken:/# ssh
ssh: error while loading shared libraries: libcrypto.so.0.9.7: cannot enable executable stack as shared object requires: Permission denied

jednoduche riesenia (thx stanojr)
execstack -c /usr/lib/libcrypto.so.0.9.7
a na dalsie kniznice ktore sa objavia v erroroch.

execstack je v baliku prelink
bug je zdokumentovany tu: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=321721