diff -r 3b1da2848fc7 -r d3bac044e0f0 src/gui/kernel/qeventdispatcher_mac.mm
--- a/src/gui/kernel/qeventdispatcher_mac.mm	Fri Feb 19 23:40:16 2010 +0200
+++ b/src/gui/kernel/qeventdispatcher_mac.mm	Fri Mar 12 15:46:37 2010 +0200
@@ -569,7 +569,7 @@
             // in cocoa. [NSApp run] should be called at least once for any cocoa app.
             if (NSModalSession session = d->currentModalSession()) {
                 QBoolBlocker execGuard(d->currentExecIsNSAppRun, false);
-                while (!d->interrupt && [NSApp runModalSession:session] == NSRunContinuesResponse)
+                while ([NSApp runModalSession:session] == NSRunContinuesResponse && !d->interrupt)
                     qt_mac_waitForMoreModalSessionEvents();
                 if (!d->interrupt && session == d->currentModalSessionCached) {
                     // INVARIANT: Someone called e.g. [NSApp stopModal:] from outside the event