Ubuntu

Comment 2 for bug 529540

StacktraceTop:
 malloc_consolidate (av=<value optimized out>)
 _int_malloc (av=<value optimized out>,
 __libc_calloc (n=1, elem_size=512) at malloc.c:4063
 VBoxNsprPR_Calloc (nelem=1, elsize=512)
 VBoxNsprPR_SetThreadPrivate (index=2, priv=0x855d558)