Bug in xfig

I have a few month old .fig diagram that i am trying to open in xfig in
Ubuntu 5.10. But when I open it xfig closes immediatly and I get this
error:

*** glibc detected *** double free or corruption (fasttop): 0x082928b0 ***
Aborted
mos@ubuntu:~$




When I open xfig I also get these errors:

mos@ubuntu:~$ xfig
Warning: Missing charsets in String to FontSet conversion
Warning: Cannot convert string
"-*-times-medium-r-normal--16-*-*-*-*-*-*-*,-*-*-medium-r-normal--16-*-*-*-*-*-*-*,*--16-*"
to type FontSet
Warning: Missing charsets in String to FontSet conversion
Warning: Cannot convert string
"-*-times-medium-r-normal--16-*-*-*-*-*-*-*,-*-*-medium-r-normal--16-*-*-*-*-*-*-*,-*-*-*-r-*--16-*-*-*-*-*-*-*"
to type FontSet
Warning: Missing charsets in String to FontSet conversion
Warning: Cannot convert string
"-*-times-bold-r-normal--16-*-*-*-*-*-*-*,-*-*-bold-r-normal--16-*-*-*-*-*-*-*,-*-*-*-r-*--16-*-*-*-*-*-*-*"
to type FontSet

Any ideas?

.

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