I use fedora 16 64 bits.
I have compiled rakarrack trunk version.
When I used presets based on distortions, all the sounds are clean (not distorted). The chorused sound works.
For some presets, I've got a hang. Here is a gdb log (I started rakarrack, activated it and selected edgy in the bank selector):
#0 0x0000000000496c75 in Waveshaper::waveshapesmps (this=0x7fffe418ac50, n=256, smps=0x6fd1c0, type=<optimized out>, drive=<optimized out>, eff=1)
#1 0x000000000049d408 in StompBox::out (this=0x7fffe418b970, smpsl=0x6fd1c0, smpsr=0x6fd5d0) at StompBox.C:127
#2 0x000000000045fa2a in RKR::Alg (this=0x7fffffee2910, inl1=<optimized out>, inr1=<optimized out>, origl=0x7fffebe0a210, origr=0x7fffebe0a210)
#3 0x0000000000407468 in jackprocess (nframes=256, arg=<optimized out>) at jack.C:244
#4 0x000000384da11cb2 in ?? () from /usr/lib64/libjack.so.0
#5 0x000000384da25280 in ?? () from /usr/lib64/libjack.so.0
#6 0x0000003c2a007d90 in start_thread () from /lib64/libpthread.so.0
#7 0x0000003c294f0f5d in clone () from /lib64/libc.so.