Index: sources/storage/usbwatcher.cpp
===================================================================
diff -u -r862dc0590b73c618fac73dce2c976e3526e0404a -re58b907a69d4ca7daa77d69791593b886d1b80e8
--- sources/storage/usbwatcher.cpp	(.../usbwatcher.cpp)	(revision 862dc0590b73c618fac73dce2c976e3526e0404a)
+++ sources/storage/usbwatcher.cpp	(.../usbwatcher.cpp)	(revision e58b907a69d4ca7daa77d69791593b886d1b80e8)
@@ -99,6 +99,7 @@
     _thread->setObjectName(QString("%1_Thread").arg(metaObject()->className()));
     connect(qApp, SIGNAL(aboutToQuit()), this, SLOT(quit()));
     _thread->start();
+    _thread->setPriority(QThread::LowestPriority);
     moveToThread(_thread);
 }
 
@@ -240,7 +241,7 @@
 bool USBWatcher::usbUmount(const QString &vDevice)
 {
     bool ok;
-    ok = umount(vDevice.toLatin1().constData()) == 0;
+    ok = ::umount(vDevice.toLatin1().constData()) == 0;
     if (ok) {
         _mounted = false;
         LOG_EVENT(tr("USB drive unmounted"));