diff -u'Nrpk~' kvpnc-0.9.3-kde4~/src/utils.cpp kvpnc-0.9.3-kde4/src/utils.cpp
--- kvpnc-0.9.3-kde4~/src/utils.cpp	2009-12-08 16:07:48 +0300
+++ kvpnc-0.9.3-kde4/src/utils.cpp	2009-12-14 15:25:21 +0300
@@ -645,8 +645,9 @@ Utils::PppdCapabilities Utils::checkPppd
     TestPppdProcess = new QProcess(this);
     QString proc = GlobalConfig->pathToPppd;
     QStringList args;
-    args.append("/dev/null");
+    args.append("notty");
     args.append("require-mppe");
+    args.append(">/dev/null");
 
     TestPppdProcess->setProcessChannelMode(QProcess::MergedChannels);
 
@@ -687,9 +688,11 @@ Utils::PppdCapabilities Utils::checkPppd
     TestPppdProcess = new QProcess(this);
     proc = GlobalConfig->pathToPppd;
     args.clear();
-    args.append("/dev/null");
+    args.append("notty");
     args.append("mppe");
     args.append("required");
+    args.append("require-mppe");
+    args.append(">/dev/null");
 
     TestPppdProcess->setProcessChannelMode(QProcess::MergedChannels);