Question to lttv-gui

Hi all,
after installing a lltng into a PPC Kernel 2.6.22. I am able to start
lttctl and can trace events. I wrote a small application with two
threads which are doing something only to waste some CPU time.  
After stopping the trace, I start lttv-gui to examine the trace.
And there is in my eyes something missing. I saw in dark green the
startpoint of the threads and it stays dark green until the threads
ended up. So there are now colors like pale blue (running in a system
call) or green (running in usermode) in the gui. 
Can anybody give me a hint what went wrong in the gui or in the trace?

I am using 
ltt-control 0.42
LinuxTraceToolkitViewer-0.8.83
lttng 0.9.10

Many thanks in advance.

regards 
Holger

P.S.: is this there another mailing list for lttv-gui or is this the
mailing list for both topics?