Given the complexity of the whole app, I couldn't make a small script. 
The offending code was:
$tplBoxes = array ();
<?php foreach ($tplBoxes as $box) {
<option value="<?=$box['idb']?>"><?=$box['title']?></option>
 <?php } ?>

[note the missing ?> after foreach]

And the logs were:
Wed Apr 25 22:01:12 2001] [error] PHP Parse error:  parse error in /usr/local/cvsdevel/php/aol/htdocs/Admin/editTemplat
/usr/local/cvsdevel/php/aol/htdocs/Admin/editTemplates.php(40) : Parse error - parse error
[Wed Apr 25 22:01:12 2001] [notice] child pid 7245 exit signal Segmentation fault (11)

line 40 is exactly the line with the missing ?>

The backtrace is:
Program received signal SIGSEGV, Segmentation fault.
0x40185cc8 in _zval_ptr_dtor () at zend_execute_API.c:103
103     }
(gdb) bt
#0  0x40185cc8 in _zval_ptr_dtor () at zend_execute_API.c:103
#1  0x40184792 in zend_switch_free (opline=0x824b94c, Ts=0xbfffd074) at ./zend_execute.c:236
#2  0x401811c1 in execute () at ./zend_execute.c:877
#3  0x40181e85 in execute () at ./zend_execute.c:877
#4  0x40181e85 in execute () at ./zend_execute.c:877
#5  0x40191880 in zend_execute_scripts () at zend.c:259
#6  0x401a99b3 in php_execute_script () at main.c:1153
#7  0x401a503e in apache_php_module_main () at sapi_apache.c:98
#8  0x401a5d69 in send_php () at mod_php4.c:433
#9  0x401a5db3 in send_parsed_php () at mod_php4.c:433
#10 0x8076669 in ap_invoke_handler ()
#11 0x808c05f in process_request_internal ()
#12 0x808c0d2 in ap_process_request ()
#13 0x8082c76 in child_main ()
#14 0x8082e55 in make_child ()
#15 0x8082fd6 in startup_children ()
#16 0x808365c in standalone_main ()
#17 0x8083eac in main ()
#18 0x40083a8e in __libc_start_main () at ../sysdeps/generic/libc-start.c:93
(gdb) 

hope it helps

ciao 

--teodor