>[ERROR] ptrace(PEEKDATA) failed: Input/output error (5)
что означает эта ошибка?

[code](gdb) where
#0 0x00549422 in __kernel_vsyscall ()
#1 0x00881ab8 in accept () from /lib/tls/i686/cmov/libc.so.6
#2 0x0839c9f7 in fcgi_accept_request (req=0xbfc1d574) at /build/buildd/php5-5.3.2/sapi/fpm/fpm/fastcgi.c:764
#3 0x083a1e0f in main (argc=3, argv=0xbfc1f674) at /build/buildd/php5-5.3.2/sapi/fpm/fpm/fpm_main.c:1777[/code]

PHP 5.3.2-1ubuntu4.2ppa3~lucid1 (fpm-fcgi) (built: May 21 2010 20:36:05)