Karl M Hegbloom <karlheg(a)inetarena.com&gt; writes: Crash repeated. All I have to do is enter Gnus, read Karl's message with the deadly PNG and XEmacs is going to die ... (gdb) run Starting program: /usr/src/build20/mule/src/xemacs Program received signal SIGSEGV, Segmentation fault. chunk_free (ar_ptr=Cannot access memory at address 0x44. ) at malloc.c:2778 malloc.c:2778: No such file or directory. (gdb) where #0 chunk_free (ar_ptr=Cannot access memory at address 0x44. ) at malloc.c:2778 #1 0x403c50fc in __DTOR_END__ () Cannot access memory at address 0x20. Memory corruption up the ying yang. I'm going to try the heavy-duty malloc/free checking and see if that sheds any light.