idb failing on Fedora Core 2

idb failing on Fedora Core 2

I've been using ifort (version 8.1) to compile some Fortran 77 code. I'm running on an up to date Fedora Core 2 system (gcc 3.3.3). The programs compile and run with no problems, however using the idb debugger I've had sporadic problems. Just now I got:
Assertion failed: _machine != NULLsrc/appl/procs/addrspace.C1524

This occurred while trying to use the debugger gui on code compiled with the options: -g -w90 -w95 -cm -check -warn alignments -fpstkchk

As I said it seems to be sporadic working sometimes and not others -- though this could be caused by libraries changing (not sure). Any suggestions? Is this a known bug?

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