[plt-scheme] Debugging drscheme3d

Hi,

In the last few days I've had some problems with drscheme 301.5. It
kept crashing after a few hours of usage for no aparent reason, so I
decided to go and debug it running it on gdb which would make it a lot
slower but well... Nothing happened... no crashed. Today I got 301.6
and started trying drscheme3m. I though it was nice since there was no
crash the whole day... up until now... So I tried running it through
gdb like I did for normal drscheme, using the method in:
http://sat.inesc-id.pt/~pocm/minority/?p=121

Didn't work, gdb:
(gdb) run -synchronous -mvqM drscheme3m
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /usr/local/plt/plt-svn-180206/bin/mred3m
-synchronous -mvqM drscheme3m
[Thread debugging using libthread_db enabled]
[New Thread -1215588688 (LWP 14297)]

Program received signal SIGSEGV, Segmentation fault.

Any one knows why?

Cheers,
--
Paulo Jorge Matos - pocm at sat inesc-id pt
Web: http://sat.inesc-id.pt/~pocm
Computer and Software Engineering
INESC-ID - SAT Group