internal error: weird activation record found on stack: 9

[Peter Simons]

I wrote:

 > Simon Marlow writes:

 >> Please compile the program with -debug, then open it
 >> with gdb.

 > Unfortunately, -debug seems to conflict with -threaded:

 >   ghc --make -threaded -debug -O -Wall [...] -o postmaster tutorial.lhs [...]
 >   Chasing modules from: tutorial.lhs
 >   [...]
 >   Compiling Main             ( tutorial.lhs, .objs/Main.o )
 >   Linking ...
 >   /usr/lib/gcc-lib/i686-pc-linux-gnu/bin/ld: cannot find -lHSrts_thr_debug
 >   collect2: ld returned 1 exit status

It has been a while since this problem came up, and I was
wondering what to do now, because the software keeps
crashing (or freezing) every few days.

Any advice, anyone?

Peter