diff -Nrup xf86-video-xgi-1.5.1/src/xgi_driver.c patched/src/xgi_driver.c
--- xf86-video-xgi-1.5.1/src/xgi_driver.c	2010-02-17 17:10:44.894583394 -0200
+++ patched/src/xgi_driver.c	2010-02-17 17:10:22.884582578 -0200
@@ -722,13 +722,13 @@ XGIErrorLog(ScrnInfoPtr pScrn, const cha
         "**************************************************\n";
 
     va_start(ap, format);
-    xf86DrvMsg(pScrn->scrnIndex, X_ERROR, str);
+    xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "%s", str);
     xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "                      ERROR:\n");
     xf86VDrvMsgVerb(pScrn->scrnIndex, X_ERROR, 1, format, ap);
     va_end(ap);
     xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
                "                  END OF MESSAGE\n");
-    xf86DrvMsg(pScrn->scrnIndex, X_ERROR, str);
+    xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "%s", str);
 }
 
 #ifdef XSERVER_LIBPCIACCESS