Hello list, I am using Emacs 22.90 with cperl-mode. On small files the performance is acceptable and the features are very powerfull. On files > 500 lines or so it becomes a little laggy. In one particular file I have here docs nested inside of an anonymous hash. The latency is so high for cursor movement/inserting characters that I can type 10-15 characters before they appear on-screen. In fact if I didn't wait for emacs to catch up I suspect I could extend the input queue almost indefinitely. My Machine is old , but not slow; not for this at least. uname -a = "Linux reforged 2.6.18.2 #1 PREEMPT Sat Nov 4 19:16:56 PST 2006 i686 AMD Athlon(tm) XP 3000+ AuthenticAMD GNU/Linux" If this is a known problem with a known fix any help would be appreciated. If this is a new issue then I will work up a reduced test case to repoduce it. Cheers, Mike Mattie