I'm using QGIS 1.8.0 on Mac OS X 10.6.8 (last stable version of QGIS I downloaded yesterday).
After working yesterday and this morning on it, I'm trying to open it again, and QGIS asks me the username and password to access the PostGIS database and crashes after 10 seconds.
I also have QGIS 1.7 and 1.9 installed on my computer.
Here is the crash message, if this can help:
Process: QGIS [342]
Path: /Applications/QGIS.app/Contents/MacOS/QGIS
Identifier: org.qgis.qgis
Version: 1.8.0 (1.8.0 ())
Code Type: X86-64 (Native)
Parent Process: launchd [124]
Date/Time: 2012-07-13 14:54:37.581 +0200
OS Version: Mac OS X 10.6.8 (10K549)
Report Version: 6
Interval Since Last Report: 253852 sec
Crashes Since Last Report: 18
Per-App Interval Since Last Report: 15946 sec
Per-App Crashes Since Last Report: 7
Anonymous UUID: 4D1290E1-470F-4017-A8E7-1EA41258D661
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000610163
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Thread 0 Crashed: Dispatch queue: com.apple.main-thread
0 libdelimitedtextprovider.so 0x000000011a2edeaf QgsDelimitedTextProvider::~QgsDelimitedTextProvider() + 35
1 libdelimitedtextprovider.so 0x000000011a2ede62 QgsDelimitedTextProvider::~QgsDelimitedTextProvider() + 18
2 org.qgis.qgis_core 0x0000000103e2d5b4 QgsProviderRegistry::provider(QString const&, QString const&) + 192
3 org.qgis.qgis_core 0x0000000103e50e2b QgsVectorLayer::setDataProvider(QString const&) + 89
4 org.qgis.qgis_core 0x0000000103e5b825 QgsVectorLayer::readXml(QDomNode const&) + 463
5 org.qgis.qgis_core 0x0000000103dfc763 QgsMapLayer::readXML(QDomNode const&) + 3999
6 org.qgis.qgis_core 0x0000000103e1e815 QgsProject::addLayer(QDomElement const&, QList<QDomNode>&, QList<QPair<QgsVectorLayer*, QDomElement> >&) + 1291
7 org.qgis.qgis_core 0x0000000103e1c910 QgsProject::_getMapLayers(QDomDocument const&) + 1378
8 org.qgis.qgis_core 0x0000000103e1f908 QgsProject::read() + 3760
9 org.qgis.qgis_core 0x0000000103e1ea23 QgsProject::read(QFileInfo const&) + 77
10 org.qgis.qgis 0x00000001000240f4 QgisApp::addProject(QString) + 140
11 org.qgis.qgis 0x0000000100026525 QgisApp::openProject(QString const&) + 55
12 org.qgis.qgis 0x000000010001622e QgisApp::openFile(QString const&) + 108
13 org.qgis.qgis 0x00000001000169ac QgisApp::event(QEvent*) + 40
14 QtGui 0x0000000104d0193d QApplicationPrivate::notify_helper(QObject*, QEvent*) + 189
15 QtGui 0x0000000104d07dc4 QApplication::notify(QObject*, QEvent*) + 1060
16 org.qgis.qgis_core 0x0000000103da0762 QgsApplication::notify(QObject*, QEvent*) + 100
17 QtCore 0x0000000104a4a17c QCoreApplication::notifyInternal(QObject*, QEvent*) + 124
18 org.qgis.qgis_core 0x0000000103da0ada QgsApplication::setFileOpenEventReceiver(QObject*) + 158
19 org.qgis.qgis 0x000000010000bf52 QgisApp::QgisApp(QSplashScreen*, bool, QWidget*, QFlags<Qt::WindowType>) + 5508
20 org.qgis.qgis 0x0000000100008f52 main + 7938
21 org.qgis.qgis 0x0000000100006c04 start + 52
Thread 1: Dispatch queue: com.apple.libdispatch-manager
0 libSystem.B.dylib 0x00007fff895ffc0a kevent + 10
1 libSystem.B.dylib 0x00007fff89601add _dispatch_mgr_invoke + 154
2 libSystem.B.dylib 0x00007fff896017b4 _dispatch_queue_invoke + 185
3 libSystem.B.dylib 0x00007fff896012de _dispatch_worker_thread2 + 252
4 libSystem.B.dylib 0x00007fff89600c08 _pthread_wqthread + 353
5 libSystem.B.dylib 0x00007fff89600aa5 start_wqthread + 13
Thread 0 crashed with X86 Thread State (64-bit):
rax: 0x000000011a2f34a0 rbx: 0x000000011fbe61b0 rcx: 0x00007fff710b7650 rdx: 0x00000000005e8300
rdi: 0x0000000000610163 rsi: 0x000000011fb00000 rbp: 0x00007fff5fbfdee0 rsp: 0x00007fff5fbfdec0
r8: 0x0000000000000001 r9: 0x000000011fbe67b0 r10: 0x0000000000000000 r11: 0x0000000000000015
r12: 0x000000011fbe1fd8 r13: 0x000000011fbe1f10 r14: 0x000000011fbe5180 r15: 0x000000011fbe1f50
rip: 0x000000011a2edeaf rfl: 0x0000000000010206 cr2: 0x0000000000610163