When I include any URL in a call to include(), it causes a core dump.  This worked fine on Redhat 5.2, but not with a clean install of Redhat 6.0.  The module was compiled identically for both systems using:  "./configure --with-mysql --with-apxs"

The following is the gdb backtrace:

Program received signal SIGSEGV, Segmentation fault.
0x401388f3 in __regexec (preg=0xbfff4464,
    string=0x9 <Address 0x9 out of bounds>, nmatch=10, pmatch=0xbfff4414,
    eflags=0) at regex.c:5708
regex.c:5708: No such file or directory.

The script used was:

<?
include ('http://192.168.0.1/index.html');
?>

It does the same thing on all URLs I throw at it.