--- rxvt-unicode/src/feature.h	2006/03/04 18:42:15	1.49
+++ rxvt-unicode/src/feature.h	2007/01/09 16:21:15	1.51
@@ -62,8 +62,8 @@
 
 /*
  * Forcefully disable double-buffering for xft. On some card/driver combination
- * this slightly decreases performance, on most it greatly helps it.
- * The slowdown is small, so it * should normally be enabled.
+ * enabling it slightly decreases performance, on most it greatly helps it.
+ * The slowdown is small, so it should normally be enabled.
  */
 /* #define FORCE_UNBUFFERED_XFT */
 
@@ -391,10 +391,15 @@
 
 /*
  * Enable the linux yield/usleep hack, which can dramatically improve
- * performance without hurting. See command.C for details.
+ * performance by working around the linux kernel tty ratelimit bug.
+ * Unfortunately, it seems screen is negatively affected by this on some
+ * machines, so it is disabled by default. Use freebsd or any other kernel
+ * that doesn't suffer form this bug and it will be fast either way.
+ *
+ * See command.C for details.
  */
 #if __linux__
-# define LINUX_YIELD_HACK 1
+# define LINUX_YIELD_HACK 0
 #endif
 
 #endif