--- sourceforge.net/trunk/rdesktop/xwin.c	2004/03/03 10:41:53	619
+++ sourceforge.net/trunk/rdesktop/xwin.c	2004/03/03 10:46:35	620
@@ -1922,6 +1922,12 @@
 
 	SET_FOREGROUND(bgcolour);
 
+	/* Sometimes, the boxcx value is something really large, like
+	   32691. This makes XCopyArea fail with Xvnc. The code below
+	   is a quick fix. */
+	if (boxx + boxcx > g_width)
+		boxcx = g_width - boxx;
+
 	if (boxcx > 1)
 	{
 		FILL_RECTANGLE_BACKSTORE(boxx, boxy, boxcx, boxcy);