scrolling bug

AMAZINGly fun fractal generation, and fast....
on a 64bit nocona, zooming quickly with the mouse scroll button results in segmentation fault while left/right button zooming never does.
(scrolling does work as long as you only scroll 1/refresh
Also, this is a Dual cpu, QT-4.3.2-r1

Program received signal SIGSEGV, Segmentation fault.
0x000000000041f9c7 in DataFunctions::drawImage (image=@0x6f2000, data=0x6ea550, region=@0x7fff7245b0f0,
mapper=@0x7fff7245b050, antiAliasing=) at datafunctions.cpp:260
260 color[ i ][ 1 ] = mapper.map( src[ i * stride ] );
(gdb) next

Program terminated with signal SIGSEGV, Segmentation fault.
The program no longer exists.

(gdb) run
Starting program: /home/user/fractive/fraqtive-0.4.0/release/fraqtive

Program received signal SIGSEGV, Segmentation fault.
0x000000000041f9c7 in DataFunctions::drawImage (image=@0x6f8e50, data=0x6f1780, region=@0x7fffad1e2e80,
mapper=@0x7fffad1e2de0, antiAliasing=) at datafunctions.cpp:260
260 color[ i ][ 1 ] = mapper.map( src[ i * stride ] );

i might build the newest qt-4.3 with debugging to see if it adds anything else