* etc/PROBLEMS: Mention X forwarding slowdowns. (Bug#7092)

diff --git a/etc/PROBLEMS b/etc/PROBLEMS
index 8055d0e4e2bb46883f9a5d87acfdaec0d2179bb9..19c6fed13fefd43a0ee9df47b28453460fa6a657 100644 (file)
--- a/etc/PROBLEMS
+++ b/etc/PROBLEMS
@@ -1644,6 +1644,13 @@ restart the X server after the monitor configuration has been changed.
 
 * Runtime problems on character terminals
 
+*** With X forwarding, mouse highlighting can make Emacs slow.
+
+If you see slow updates when moving the mouse in an Emacs running on a
+remote X server, try this:
+
+    (setq mouse-highlight nil)
+
 ** The meta key does not work on xterm.
 
 Typing M-x rings the terminal bell, and inserts a string like ";120~".