Using firefox 1.0, debian unstable (x86), xorg 6.8.1 I have experienced segfaults in the following situation: - login as normal user - start ff - normal web navigation works fine - visit a remote XUL page with a textbox input field (<xul:textbox/>) - at first keypress ff segafults Starting ff as root, everything works fine. Using strace I could se two open() calls for the default font in /usr/local/share/fonts. The font file had the following privs set: "-rw-r-----". Changing that to "-rw-r--r--" everything solves the problem. Still, FF should not segfault when user set default font is not available.

*** This bug has been marked as a duplicate of 183729 ***