MouseWheel binding bug in listbox and text widgets?

I've found several other posters with this same problem but I've never
seen a solution offered.  When starting any tk application (including
wish) I get this:

/usr/lib64/tk8.4/tk.tcl: no event type or button # or keysym
no event type or button # or keysym
    while executing
"bind Text <MouseWheel> {
        %W yview scroll [expr {- (%D / 120) * 4}] units
    }"

My workaround is to comment these lines in listbox.tcl and text.tcl:

--- text.tcl.orig       2008-10-07 09:01:39.000000000 -0700
+++ text.tcl    2008-10-07 10:38:57.000000000 -0700
@@ -460,9 +460,9 @@
         %W xview scroll [expr {-10 * (%D)}] units
     }
 } else {
-    bind Text <MouseWheel> {
-        %W yview scroll [expr {- (%D / 120) * 4}] units
-    }
+#    bind Text <MouseWheel> {
+#        %W yview scroll [expr {- (%D / 120) * 4}] units
+#    }
 }

The strange part is that only one of my two linux machines has this
error (the amd64 machine) but I had the same error for awhile on my
NetBSD machine.  The NetBSD error fixed itself when I upgraded a few
other packages and so I forgot about it until the same error showed
up on linux.

Any idea what's going wrong?

Thanks.

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