I had crashes in gdb and in ups (gui debugger not using gdb as backend). That makes me suspect that it is some kind of compatibility problem. I have RedHat 5.0 with following versions of relevant software: kernel 2.2.2 glibc-2.0.5c-10 gdb 4.16 egcs-2.90.23 980102 (egcs-1.0.1 release) Programs were compiled with gcc -g. Should I upgrade glibc?