My Java code using the Csound API is running without any problems with 
5.06. I use the program for long work sessions, and it's perfect.
The same code is now causing segment violation when running with 5.07 
double precision on Vista. It is possible that my logic in using the 
csound APIs is not so good, but it is so strange as you can see below 
that ... ???
 
Case 1
I create a Csound Instance, compile a CSD file with this instance, then 
start a Java thread which performs the CSD file in its run method, and 
at the end of the Perform(), call Reset().
When I quit the program, I check that the thread is not alive, and then 
I destroy resources linked to the OpenGL library (LWJGL). At this step, 
I got a segment violation in LWJGL (it's was ok with 5.06)
I change Reset() by Cleanup(), and ... OK, no more segment voilation! 
Thus I think this is in the way I use the APIs, but

Case 2
When I switch the program in full screen mode, and come back in windowed 
mode, I get also a segment violation when quitting the program (during 
the same step at case 1). In this case, the error log tells me that 
there is an error in [sfont.dll+0x89d5].
This is in when launching the application inside Eclipse. If I launch 
the application standalone, outside of Eclipse, I get a segment 
violation with a different DLL.

Any ideas?
Thanks
Jean-Pierre