Same problem here used 1.8.0 from ubuntu, and 1.8.1 from ppa, both crash my X completely, or hang my laptop.

running ubuntu 10.10 32bit

Mixxx.log:

Debug: [Main]: Mixxx 1.8.1 "" is starting... 
Debug: [Main]: Qt version is: 4.7.0 
Debug: [Main]: Configuration file is at the current version 1.8.1 
Debug: [Main]: Setting  "[Channel1]" "play" as toggle 
Debug: [Main]: Setting  "[Channel1]" "wheel_touch_switch" as toggle 
Debug: [Main]: CachingReader using 4980736 bytes. 
Debug: [Main]: Setting  "[Channel2]" "play" as toggle 
Debug: [Main]: Setting  "[Channel2]" "wheel_touch_switch" as toggle 
Debug: [Main]: CachingReader using 4980736 bytes. 
Debug: [Main]: ControlObject::getControl returning NULL for ( "[Mixer Profile]" , "LoEQFrequency" ) 
Debug: [Main]: Setting  "[Channel1]" "filterLowKill" as toggle 
Debug: [Main]: Setting  "[Channel1]" "filterMidKill" as toggle 
Debug: [Main]: Setting  "[Channel1]" "filterHighKill" as toggle 
Debug: [Main]: Setting  "[Channel1]" "pfl" as toggle 
Debug: [Main]: Setting  "[Channel2]" "filterLowKill" as toggle 
Debug: [Main]: Setting  "[Channel2]" "filterMidKill" as toggle 
Debug: [Main]: Setting  "[Channel2]" "filterHighKill" as toggle 
Debug: [Main]: Setting  "[Channel2]" "pfl" as toggle 
Debug: [Main]: Setting  "[Channel1]" "flanger" as toggle 
Debug: [Main]: Setting  "[Channel2]" "flanger" as toggle 
Debug: [Main]: SampleRate 48000 
Debug: [Main]: Latency 21 
Debug: [Main]: ("QSQLITE", "QMYSQL3", "QMYSQL") 
Debug: [Main]: src/library/trackcollection.cpp DB status: true 
Debug: [Main]: QSqlError(-1, "", "") 
Debug: [Main]: SchemaManager::upgradeToSchemaVersion already at version 5 
Debug: [Main]: TrackDAO::initialize QThread(0x883eef8, name = "Main") "qt_sql_default_connection" 
Debug: [Main]: CrateDAO::initialize() 
Debug: [Main]: CueDAO::initialize QThread(0x883eef8, name = "Main") "qt_sql_default_connection" 
Debug: [Main]: Created MissingTracksModel! 
Debug: [Main]: Promo dir: "/usr/share/mixxx//promo/1.8.0/index.html" 
Debug: [Main]: ITunesLibrary=[ "/home/peter/.itunes.xml" ] 
Warning: [Main]: WPushButton for control  "[Channel1],loop_enabled" is null, skipping. 
Warning: [Main]: WPushButton for control  "[Channel2],loop_enabled" is null, skipping. 
Warning: [Main]: WPushButton for control  "[Channel1],TrackEndMode" is null, skipping. 
Warning: [Main]: WPushButton for control  "[Channel2],TrackEndMode" is null, skipping. 
Warning: [Main]: WPushButton for control  "[Channel1],hotcue_1_enabled" is null, skipping. 
Warning: [Main]: WPushButton for control  "[Channel1],hotcue_2_enabled" is null, skipping. 
Warning: [Main]: WPushButton for control  "[Channel1],hotcue_3_enabled" is null, skipping. 
Warning: [Main]: WPushButton for control  "[Channel1],hotcue_4_enabled" is null, skipping. 
Warning: [Main]: WPushButton for control  "[Channel2],hotcue_1_enabled" is null, skipping. 
Warning: [Main]: WPushButton for control  "[Channel2],hotcue_2_enabled" is null, skipping. 
Warning: [Main]: WPushButton for control  "[Channel2],hotcue_3_enabled" is null, skipping. 
Warning: [Main]: WPushButton for control  "[Channel2],hotcue_4_enabled" is null, skipping. 
Debug: [Main]: createWaveformViewer() 
Debug: [Main]: WaveformViewerFactory :: Creating new visual waveform 
Debug: [Main]: WaveformViewerFactory :: Making new GL context. 
Debug: [Main]: Didn't get mark Color, using parent's MarkerColor: "#0000ff" 
Debug: [Main]: Didn't get mark Color, using parent's MarkerColor: "#00ff00" 
Debug: [Main]: Didn't get mark Color, using parent's MarkerColor: "#0000ff" 
Debug: [Main]: Didn't get mark TextColor, using parent's BgColor: "#ffffff" 
Debug: [Main]: Didn't get mark Color, using parent's MarkerColor: "#0000ff" 
Debug: [Main]: Didn't get mark TextColor, using parent's BgColor: "#ffffff" 
Debug: [Main]: Didn't get mark Color, using parent's MarkerColor: "#0000ff" 
Debug: [Main]: Didn't get mark TextColor, using parent's BgColor: "#ffffff" 
Debug: [Main]: createWaveformViewer() 
Debug: [Main]: WaveformViewerFactory :: Creating new visual waveform 
Debug: [Main]: WaveformViewerFactory :: Sharing existing GL context. 
Debug: [Main]: Didn't get mark Color, using parent's MarkerColor: "#ff0000" 
Debug: [Main]: Didn't get mark Color, using parent's MarkerColor: "#00ff00" 
Debug: [Main]: Didn't get mark Color, using parent's MarkerColor: "#ff0000" 
Debug: [Main]: Didn't get mark TextColor, using parent's BgColor: "#ffffff" 
Debug: [Main]: Didn't get mark Color, using parent's MarkerColor: "#ff0000" 
Debug: [Main]: Didn't get mark TextColor, using parent's BgColor: "#ffffff" 
Debug: [Main]: Didn't get mark Color, using parent's MarkerColor: "#ff0000" 
Debug: [Main]: Didn't get mark TextColor, using parent's BgColor: "#ffffff" 
Debug: [Main]: WARNING: Text widgets not destroyed before rebooting GUI. 
Debug: [Main]: WARNING: BPM widget pointers wre not reset on GUI reboot. 
Debug: [Main]: WARNING: Number widgets were not reset before rebooting GUI. 
Debug: [Main]: ControlObject::getControl returning NULL for ( "[Channel1]" , "hotcue_33_position" ) 
Debug: [Main]: ControlObject::getControl returning NULL for ( "[Channel2]" , "hotcue_33_position" ) 
Debug: [Main]: PlaylistTableModel::setPlaylist 1 
Debug: [Main]: WTrackTableView::loadTrackModel() PlaylistTableModel(0x9313560) 
Debug: [Main]: WTrackTableView::loadTrackModel() PrepareLibraryTableModel(0x93d6040) 
Debug: [Main]: MixxxLibraryFeature::activate() 
Debug: [Main]: WTrackTableView::loadTrackModel() LibraryTableModel(0x89f9228) 
Debug: [Main]: WLibrary::switchToView "WTrackTableView" 
Debug: [Main]: Constructed LibraryScanner!!! 
Debug: [Main]: iTunes Album Art path is: "" 
Debug: [LibraryScanner 1]: LibraryHashDAO::initialize LibraryScanner(0x8acb800, name = "LibraryScanner 1") "LIBRARY_SCANNER" 
Debug: [LibraryScanner 1]: CueDAO::initialize LibraryScanner(0x8acb800, name = "LibraryScanner 1") "LIBRARY_SCANNER" 
Debug: [LibraryScanner 1]: TrackDAO::initialize LibraryScanner(0x8acb800, name = "LibraryScanner 1") "LIBRARY_SCANNER" 
Debug: [Main]: Could not read "/home/peter/.mixxx/midi/MixxxMIDIDevices" 
Debug: [LibraryScanner 1]: Legacy importer took 0 ms
Debug: [Main]: Scanning MIDI devices: 
Debug: [Main]:  Found output device # 0 Midi Through Port-0 
Debug: [Main]:  Found input device # 1 Midi Through Port-0 
Debug: [Main]:     Linking to output device # 0 "Midi Through Port-0" 
Debug: [Main]: Starting script engine with output device "" 
Debug: [MidiScriptEngine 1]: MIDI Device in script engine is: "" 
Debug: [Main]: MidiDeviceManager::getDeviceList 
Debug: [Main]: MidiDeviceManager: Setting up devices 
Debug: [Main]: PortMIDI device "1. Midi Through Port-0" already closed 
Debug: [Main]: MidiMapping: Loading MIDI preset from "/home/peter/.mixxx/midi/Midi_Through_Port-0.midi.xml" 
Debug: [Main]: Could not open xml file: "/home/peter/.mixxx/midi/Midi_Through_Port-0.midi.xml" 
Debug: [Main]: selectedAPI is:  "ALSA" 
Debug: [Main]: getSliderLatencyMsec in:  10 
Debug: [Main]: getSliderLatencyMsec out:  21 
Debug: [Main]: Promo dir: "/usr/share/mixxx//promo/1.8.0/index.html" 
Debug: [Main]: loadSettings: 1 0 "" 
Debug: [Main]: slotApply crossfader: 1 "" 
Debug: [Main]: BPM Scheme File ConfigKey not set or file missing... setting to "/home/peter/.mixxx/mixxxbpmscheme.xml" 
Debug: [Main]: BpmSchemes::readXML "/home/peter/.mixxx/mixxxbpmscheme.xml" 
Debug: [Main]: BPM Scheme: "/home/peter/.mixxx/mixxxbpmscheme.xml" does not exist. 
Debug: [Main]: MidiDeviceManager::getDeviceList 
Debug: [Main]: MidiDeviceManager::getDeviceList 
Debug: [Main]: SoundManager::setupDevices() 
Debug: [Main]: VinylControlProxy: Unknown vinyl type  "" 
Debug: [Main]: Defaulting to Serato... 
Debug: [Main]: Building timecode lookup tables... 
Debug: [Main]: Starting vinyl control xwax thread 
Debug: [Main]: Building timecode lookup tables... 
Debug: [LibraryScanner 1]: Recursively scanning library. 
Debug: [Main]: Starting vinyl control xwax thread 
Debug: [Main]: SoundDevicePortAudio::open() "0, HDA Intel: STAC92xx Analog (hw:0,0)" 
Debug: [Main]: m_dSampleRate 48000 
Debug: [Main]: iLatencyMSec: 21 
Debug: [Main]: output channels: 2 | input channels: 0 
Debug: [Main]: iFramesPerBuffer 1024 
Debug: [Main]: iLatencyMSec: 21 
Debug: [Main]: Opening stream with id 0 
Debug: [Main]: Opened PortAudio stream successfully... starting 
Debug: [Main]: Dynamically loaded PortAudio library! 
Debug: [Main]: PortAudio: Started stream successfully 
Debug: [Main]: iNumDevicesOpenedForOutput: 1 
Debug: [Main]: iNumDevicesOpenedForInput: 0 
Debug: [Main]: Qt v4.6.0 or higher detected. Using rebootMixxxView() workaround. 
    (See bug https://bugs.launchpad.net/mixxx/+bug/521509) 
Debug: [Main]: Now in Rebootmixxview... 
Debug: [LibraryScanner 1]: Recursive scan finished cleanly. 
Debug: [LibraryScanner 1]: Writing tracks to database by TrackDAO::addTracks() took  0  ms 
Debug: [LibraryScanner 1]: Marking unverified tracks as deleted. 
Debug: [LibraryScanner 1]: Marking unverified directories as deleted. 
Debug: [LibraryScanner 1]: Detecting moved files. 
Debug: [LibraryScanner 1]: Scan finished cleanly 
Debug: [LibraryScanner 1]: Scan took: 198 ms


peter@phavekes-laptop:~$ lspci
00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 12)
00:01.0 PCI bridge: Intel Corporation Core Processor PCI Express x16 Root Port (rev 12)
00:16.0 Communication controller: Intel Corporation 5 Series/3400 Series Chipset HECI Controller (rev 06)
00:1a.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 06)
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 06)
00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 06)
00:1c.1 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 2 (rev 06)
00:1c.3 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 4 (rev 06)
00:1c.5 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 6 (rev 06)
00:1d.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 06)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a6)
00:1f.0 ISA bridge: Intel Corporation Mobile 5 Series Chipset LPC Interface Controller (rev 06)
00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 6 port SATA AHCI Controller (rev 06)
01:00.0 VGA compatible controller: ATI Technologies Inc M93 [Mobility Radeon HD 4500 Series]
01:00.1 Audio device: ATI Technologies Inc RV710/730
44:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01)
45:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 03)
ff:00.0 Host bridge: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers (rev 02)
ff:00.1 Host bridge: Intel Corporation Core Processor QuickPath Architecture System Address Decoder (rev 02)
ff:02.0 Host bridge: Intel Corporation Core Processor QPI Link 0 (rev 02)
ff:02.1 Host bridge: Intel Corporation Core Processor QPI Physical 0 (rev 02)
ff:02.2 Host bridge: Intel Corporation Core Processor Reserved (rev 02)
ff:02.3 Host bridge: Intel Corporation Core Processor Reserved (rev 02)


I'll try the "Visuals 1" option now.