Overview Description: 

I'm using Qsampler-0.2.2 on Gentoo; 
fresh install (2010-03-10) with real time kernel 2.6.31.12-r21, using
jack-audio-connection-kit 1.9.5 and qjackctl 3.6 

Qsampler crashes most of the time at start, but not every time (I can launch it
every 4 to 8 times); when I launch it in a terminal : i just get (after the
crash) : Segmentation fault

When I type "dmesg" in a terminal after crash, I get : 

[  533.049170] qsampler[3966]: segfault at 16f6448 ip 00007fdc60cbafc8 sp
00007fff46f56dc0 error 4 in libQtGui.so.4.6.2[7fdc605e6000+a4e000]
[  550.878995] qsampler[3979]: segfault at 7f3c02ae60e8 ip 00007f3ccabe9fc8 sp
00007fff7ec4fb80 error 4 in libQtGui.so.4.6.2[7f3cca515000+a4e000]
[  665.107963] qsampler[4004]: segfault at 7fb1016f6448 ip 00007fb145519fc8 sp
00007fff57999600 error 4 in libQtGui.so.4.6.2[7fb144e45000+a4e000]
[  674.752181] qsampler[4010]: segfault at 7fc0f97e02a8 ip 00007fc0fb3fcfc8 sp
00007fff9f4cc730 error 4 in libQtGui.so.4.6.2[7fc0fad28000+a4e000]

(this came after 4 consecutive crashes)

As the error message was poiting to libQtGui, i downgraded qt-gui
(x11-libs/qt-qui as I'm on Gentoo) from 6.2.4 to 5.4.3 and it worked perfectly
after that.

This is reproducible on another machine with exactly the same config (Gentoo,
Qsampler-0.2.2, qt-gui-6.2.4), but not on another machine running Fedora 12
(Planet CCRMA) using qt-gui 6.2.4 also (Qsampler-0.2.2,
jack-audio-connection-kit 1.9.4, qjackctl 3.5)


 Platform: 

    Build 2010-03-12 on Gentoo Linux

I'm not sure I had to report it here; it's my first time reporting a bug; i just
hope I can help.