diff --git a/ChangeLog b/ChangeLog
index 4b61c306..45effefa 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2010-12-17  Joerg Wunsch <j.gnu@uriah.heep.sax.de>
+
+	* avrdude.conf.in (ATmega128RFA1): Bump two timing values in order to
+	  improve ISP programming stability, in particular with the STK600.
+
 2010-12-14  Joerg Wunsch <j.gnu@uriah.heep.sax.de>
 
 	* stk500v2.c (stk500v2_command): Detect warning status codes.
diff --git a/avrdude.conf.in b/avrdude.conf.in
index 8790fff0..14f3b9ee 100644
--- a/avrdude.conf.in
+++ b/avrdude.conf.in
@@ -11338,7 +11338,7 @@ part
     has_jtag         = yes;
 #    stk500_devcode   = 0xB2;
 #    avr910_devcode   = 0x43;
-    chip_erase_delay = 9000;
+    chip_erase_delay = 55000;
     pagel            = 0xD7;
     bs2              = 0xE2;
     reset            = dedicated;
@@ -11453,7 +11453,7 @@ part
                           "  x   x   x   x      x   x   x   x";
 
 	mode		= 0x41;
-	delay		= 10;
+	delay		= 20;
 	blocksize	= 256;
 	readsize	= 256;
       ;