diff --git a/xscreensaver-5.00-interag-segv.patch b/xscreensaver-5.00-interag-segv.patch
new file mode 100644
index 0000000..9cf9eef
--- /dev/null
+++ b/xscreensaver-5.00-interag-segv.patch
@@ -0,0 +1,47 @@
+--- xscreensaver-5.00/hacks/interaggregate.c.interg	2006-04-06 11:30:04.000000000 +0900
++++ xscreensaver-5.00/hacks/interaggregate.c	2006-07-01 02:22:11.000000000 +0900
+@@ -352,11 +352,11 @@
+ {
+     unsigned long c;
+ 
+-    if ( x >= f->width ) x -= f->width;
+-    else if ( x < 0 ) x += f->width;
++    while ( x >= f->width ) x -= f->width;
++    while ( x < 0 ) x += f->width;
+ 	
+-    if ( y >= f->height ) y -= f->height;
+-    else if ( y < 0 ) y += f->height;
++    while ( y >= f->height ) y -= f->height;
++    while ( y < 0 ) y += f->height;
+ 
+     /* if ( in_bounds(f, x, y) ) ... */
+ 
+@@ -566,7 +566,7 @@
+ 	{
+ 	    if (i < base_orbits )
+ 	    {
+-		if ( f->base_on_center )
++	        if ( f->base_on_center )
+ 		    circle->center = &f->center_of_universe; 
+ 		else
+ 		{
+@@ -719,7 +719,9 @@
+ 		double d, dsqr, dx, dy;
+ 		Circle *c2 = f->circles + j;
+ 
++#ifdef TIME_ME
+ 		++f->possible_intersections;
++#endif
+ 		dx = c2->x - c1->x;
+ 		dy = c2->y - c1->y;
+ 
+@@ -745,7 +747,9 @@
+ 		     * intersection 
+ 		     */
+ 
++#ifdef TIME_ME
+ 		    ++f->intersection_count;
++#endif
+ 
+ 		    /* unit vector in direction of c1 to c2 */
+ 		    bx = dx / d;
diff --git a/xscreensaver.spec b/xscreensaver.spec
index 1e2600c..2ec0e93 100644
--- a/xscreensaver.spec
+++ b/xscreensaver.spec
@@ -1,7 +1,7 @@
 %define	name 		xscreensaver
 
 %define version		5.00
-%define fedora_rel	10
+%define fedora_rel	11
 
 %define fedora_ver	5.90
 %define default_text 	%{_datadir}/doc/fedora-release-%{fedora_ver}/eula.txt
@@ -31,6 +31,7 @@ Patch104:	xscreensaver-5.00-xmlmanfix.patch
 Patch105:	xscreensaver-5.00-text-locale.patch
 Patch106:	xscreensaver-5.00-noseguy-cpueat.patch
 Patch107:	xscreensaver-5.00-hacks-segv-sigfpv.patch
+Patch108:	xscreensaver-5.00-interag-segv.patch
 
 %package base
 Summary: 	A minimal installation of xscreensaver
@@ -105,6 +106,7 @@ hypnotized viewing pleasure.
 %patch105 -p1 -b .text-locale
 %patch106 -p1 -b .noseguy-cpueat
 %patch107 -p1 -b .extras-segv-fpe
+%patch108 -p1 -b .interag-segv
 
 install -c -m644 -p %{SOURCE10} po/ja.po
 
@@ -288,6 +290,9 @@ rm -rf ${RPM_BUILD_ROOT}
 %defattr(-,root,root)
 
 %changelog
+* Fri Jun 30 2006 Mamoru Tasaka <mtasaka@ioa.s.u-tokyo.ac.jp> - 1:5.00-11
+- Fix interaggregate segv.
+
 * Thu Jun 29 2006 Mamoru Tasaka <mtasaka@ioa.s.u-tokyo.ac.jp> - 1:5.00-10
 - Fix xscreensaver-extras hacks which cause SEGV or SIGFPE.