--- spambayes-1.0.4/spambayes/classifier.py.orig	2006-10-31 15:56:23.000000000 +0900
+++ spambayes-1.0.4/spambayes/classifier.py	2006-10-31 20:21:12.000000000 +0900
@@ -490,9 +490,17 @@
             clues = []
             push = clues.append
             for word in Set(wordstream):
-                tup = self._worddistanceget(word)
-                if tup[0] >= mindist:
-                    push(tup)
+                # 2006-10-31: fixed UnicodeDecodeError in clues.sort(), by owa.
+                valid = 1
+                if isinstance(word, str):
+                    try:
+                        unicode(word)
+                    except:
+                        valid = 0
+                if valid:
+                    tup = self._worddistanceget(word)
+                    if tup[0] >= mindist:
+                        push(tup)
             clues.sort()
 
         if len(clues) > options["Classifier", "max_discriminators"]: