diff --git a/labsw/LOG b/labsw/LOG
index 0bef6ab..57ddefa 100644
--- a/labsw/LOG
+++ b/labsw/LOG
@@ -174,9 +174,14 @@ Pending:
   3) drive opto LEDs from 3.3 V instead of 5 V (NOT ! Regulator
      can only provide 100 mA, which wouldn't be enough if more than
      two opto-couplers are active.)
-- labsw occasionally gets some configuration bits wrong. This may be
-  a problem with the power supply or with USB. Consider some or all of
-  the following improvements:
+- labsw occasionally gets some configuration bits wrong. The pattern
+  observed so far it that, in an attempt to turn on CH1, then CH2, CH1
+  comes on normally while CH2 either doesn't come on at all or the
+  relay switches but the LED doesn't.
+
+  This may be a problem with the power supply or with USB. Consider
+  some or all of the following improvements:
+
   - follow SiLab's recommendations for regulator bypassing more closely
   - enable the VDD monitor to catch brown-outs
   - add ground areas to shield CPU and USB