diff --git a/extensions/universalchardet/src/base/nsSBCSGroupProber.cpp b/extensions/universalchardet/src/base/nsSBCSGroupProber.cpp
index f0d1351dddc2..37e386216b13 100644
--- a/extensions/universalchardet/src/base/nsSBCSGroupProber.cpp
+++ b/extensions/universalchardet/src/base/nsSBCSGroupProber.cpp
@@ -55,8 +55,11 @@ nsSBCSGroupProber::nsSBCSGroupProber()
   mProbers[7] = new nsSingleByteCharSetProber(&Win1253Model);
   mProbers[8] = new nsSingleByteCharSetProber(&Latin5BulgarianModel);
   mProbers[9] = new nsSingleByteCharSetProber(&Win1251BulgarianModel);
-  mProbers[10] = new nsSingleByteCharSetProber(&Latin2HungarianModel);
-  mProbers[11] = new nsSingleByteCharSetProber(&Win1250HungarianModel);
+
+  // disable latin2 before latin1 is available, otherwise all latin1 
+  // will be detected as latin2 because of their similarity.
+  //mProbers[10] = new nsSingleByteCharSetProber(&Latin2HungarianModel);
+  //mProbers[11] = new nsSingleByteCharSetProber(&Win1250HungarianModel);
 
   Reset();
 }
diff --git a/extensions/universalchardet/src/base/nsSBCSGroupProber.h b/extensions/universalchardet/src/base/nsSBCSGroupProber.h
index b238a6afc192..6ae746c3cfff 100644
--- a/extensions/universalchardet/src/base/nsSBCSGroupProber.h
+++ b/extensions/universalchardet/src/base/nsSBCSGroupProber.h
@@ -40,7 +40,7 @@
 #define nsSBCSGroupProber_h__
 
 
-#define NUM_OF_SBCS_PROBERS    12
+#define NUM_OF_SBCS_PROBERS    10
 
 class nsSingleByteCharSetProber;
 class nsSBCSGroupProber: public nsCharSetProber {
diff --git a/extensions/universalchardet/src/base/nsSBCharSetProber.cpp b/extensions/universalchardet/src/base/nsSBCharSetProber.cpp
index b57b46176fb2..aa9eba69ae22 100644
--- a/extensions/universalchardet/src/base/nsSBCharSetProber.cpp
+++ b/extensions/universalchardet/src/base/nsSBCharSetProber.cpp
@@ -98,7 +98,7 @@ float nsSingleByteCharSetProber::GetConfidence(void)
   float r;
 
   if (mTotalSeqs > 0) {
-    r = ((float)1.2) * mSeqCounters[POSITIVE_CAT] / mTotalSeqs / mModel->mTypicalPositiveRatio;
+    r = ((float)1.0) * mSeqCounters[POSITIVE_CAT] / mTotalSeqs / mModel->mTypicalPositiveRatio;
     r = r*mFreqChar/mTotalChar;
     if (r >= (float)1.00)
       r = (float)0.99;