diff --git a/F-Droid/res/xml/preferences.xml b/F-Droid/res/xml/preferences.xml
index 0de38fb22..453c2e2a3 100644
--- a/F-Droid/res/xml/preferences.xml
+++ b/F-Droid/res/xml/preferences.xml
@@ -52,10 +52,6 @@
 		<EditTextPreference
 		    android:key="localRepoName"
 		    android:title="@string/local_repo_name" />
-		<CheckBoxPreference
-		    android:defaultValue="false"
-		    android:key="localRepoHttps"
-		    android:title="@string/local_repo_https" />
 	</PreferenceCategory>
 	<PreferenceCategory android:title="@string/proxy" >
         <CheckBoxPreference
diff --git a/F-Droid/src/org/fdroid/fdroid/Preferences.java b/F-Droid/src/org/fdroid/fdroid/Preferences.java
index fc8963c68..ae21febbb 100644
--- a/F-Droid/src/org/fdroid/fdroid/Preferences.java
+++ b/F-Droid/src/org/fdroid/fdroid/Preferences.java
@@ -152,7 +152,7 @@ public class Preferences implements SharedPreferences.OnSharedPreferenceChangeLi
     }
 
     public boolean isLocalRepoHttpsEnabled() {
-        return preferences.getBoolean(PREF_LOCAL_REPO_HTTPS, DEFAULT_LOCAL_REPO_HTTPS);
+        return false; // disabled until it works well
     }
 
     private String getDefaultLocalRepoName() {
diff --git a/F-Droid/src/org/fdroid/fdroid/Utils.java b/F-Droid/src/org/fdroid/fdroid/Utils.java
index cde1f8a8b..e2bc69ab3 100644
--- a/F-Droid/src/org/fdroid/fdroid/Utils.java
+++ b/F-Droid/src/org/fdroid/fdroid/Utils.java
@@ -339,6 +339,8 @@ public final class Utils {
     }
 
     public static String calcFingerprint(Certificate cert) {
+        if (cert == null)
+            return null;
         try {
             return calcFingerprint(cert.getEncoded());
         } catch (CertificateEncodingException e) {
@@ -347,6 +349,8 @@ public final class Utils {
     }
 
     public static String calcFingerprint(byte[] key) {
+        if (key == null)
+            return null;
         String ret = null;
         if (key.length < 256) {
             Log.e(TAG, "key was shorter than 256 bytes (" + key.length + "), cannot be valid!");
diff --git a/F-Droid/src/org/fdroid/fdroid/localrepo/LocalRepoKeyStore.java b/F-Droid/src/org/fdroid/fdroid/localrepo/LocalRepoKeyStore.java
index 548043b1c..a38fb559c 100644
--- a/F-Droid/src/org/fdroid/fdroid/localrepo/LocalRepoKeyStore.java
+++ b/F-Droid/src/org/fdroid/fdroid/localrepo/LocalRepoKeyStore.java
@@ -10,6 +10,7 @@ import org.spongycastle.asn1.x500.X500Name;
 import org.spongycastle.asn1.x509.GeneralName;
 import org.spongycastle.asn1.x509.GeneralNames;
 import org.spongycastle.asn1.x509.SubjectPublicKeyInfo;
+import org.spongycastle.asn1.x509.Time;
 import org.spongycastle.asn1.x509.X509Extension;
 import org.spongycastle.cert.X509CertificateHolder;
 import org.spongycastle.cert.X509v3CertificateBuilder;
@@ -41,6 +42,8 @@ import java.security.cert.CertificateException;
 import java.security.cert.X509Certificate;
 import java.util.Calendar;
 import java.util.Date;
+import java.util.GregorianCalendar;
+import java.util.Locale;
 
 import javax.net.ssl.KeyManager;
 import javax.net.ssl.KeyManagerFactory;
@@ -291,17 +294,22 @@ public class LocalRepoKeyStore {
         SubjectPublicKeyInfo subPubKeyInfo = new SubjectPublicKeyInfo(
                 ASN1Sequence.getInstance(pubKey.getEncoded()));
 
-        Date startDate = new Date(); // now
+        Date now = new Date(); // now
 
-        Calendar c = Calendar.getInstance();
-        c.setTime(startDate);
+        /* force it to use a English/Gregorian dates for the cert, hardly anyone
+           ever looks at the cert metadata anyway, and its very likely that they
+           understand English/Gregorian dates */
+        Calendar c = new GregorianCalendar(Locale.ENGLISH);
+        c.setTime(now);
         c.add(Calendar.YEAR, 1);
-        Date endDate = c.getTime();
+        Time startTime = new Time(now, Locale.ENGLISH);
+        Time endTime = new Time(c.getTime(), Locale.ENGLISH);
 
         X509v3CertificateBuilder v3CertGen = new X509v3CertificateBuilder(
                 subject,
                 BigInteger.valueOf(rand.nextLong()),
-                startDate, endDate,
+                startTime,
+                endTime,
                 subject,
                 subPubKeyInfo);
 
diff --git a/F-Droid/src/org/fdroid/fdroid/net/WifiStateChangeService.java b/F-Droid/src/org/fdroid/fdroid/net/WifiStateChangeService.java
index 7fa094999..398e65d59 100644
--- a/F-Droid/src/org/fdroid/fdroid/net/WifiStateChangeService.java
+++ b/F-Droid/src/org/fdroid/fdroid/net/WifiStateChangeService.java
@@ -123,10 +123,6 @@ public class WifiStateChangeService extends Service {
                 // the fingerprint for the local repo's signing key
                 LocalRepoKeyStore localRepoKeyStore = LocalRepoKeyStore.get(context);
                 Certificate localCert = localRepoKeyStore.getCertificate();
-                // We were not able to generate/get a certificate
-                if (localCert == null) {
-                    return null;
-                }
                 FDroidApp.repo.fingerprint = Utils.calcFingerprint(localCert);
 
                 /*
diff --git a/F-Droid/src/org/fdroid/fdroid/views/fragments/PreferencesFragment.java b/F-Droid/src/org/fdroid/fdroid/views/fragments/PreferencesFragment.java
index c9373dd16..338c117b7 100644
--- a/F-Droid/src/org/fdroid/fdroid/views/fragments/PreferencesFragment.java
+++ b/F-Droid/src/org/fdroid/fdroid/views/fragments/PreferencesFragment.java
@@ -39,7 +39,6 @@ public class PreferencesFragment extends PreferenceFragment
         Preferences.PREF_IGN_TOUCH,
         Preferences.PREF_LOCAL_REPO_BONJOUR,
         Preferences.PREF_LOCAL_REPO_NAME,
-        Preferences.PREF_LOCAL_REPO_HTTPS,
         Preferences.PREF_LANGUAGE,
         Preferences.PREF_CACHE_APK,
         Preferences.PREF_EXPERT,