hardwired default for proof-shell-quit-timeout (PG 4.1 provides rather low value);

--- a/etc/proofgeneral-settings.el	Sat Jan 15 00:14:17 2011 +0100
+++ b/etc/proofgeneral-settings.el	Sat Jan 15 12:19:07 2011 +0100
@@ -3,6 +3,7 @@
 ;; Examples for sensible settings:
 
 (custom-set-variables '(indent-tabs-mode nil))
+(custom-set-variables '(proof-shell-quit-timeout 45))
 
 ;(custom-set-variables '(isar-eta-contract nil))