#0  0xb7678b28 in scm_gc_mark_dependencies () from /usr/lib/libguile.so.17
#1  0xb7678d3c in scm_gc_mark () from /usr/lib/libguile.so.17
#2  0xb7678dea in scm_mark_locations () from /usr/lib/libguile.so.17
#3  0xb76cb7f9 in scm_threads_mark_stacks () from /usr/lib/libguile.so.17
#4  0xb7678e2d in scm_mark_all () from /usr/lib/libguile.so.17
#5  0xb7677ee5 in scm_i_gc () from /usr/lib/libguile.so.17
#6  0xb76780ae in scm_gc_for_newcell () from /usr/lib/libguile.so.17
#7  0xb769d743 in scm_cons () from /usr/lib/libguile.so.17
#8  0xb768ad47 in scm_append () from /usr/lib/libguile.so.17
#9  0xb771a863 in getWindowList () at compiz-scheme.c:200
#10 0xb7671dfe in ?? () from /usr/lib/libguile.so.17
#11 0xb74d2000 in ?? ()
#12 0xbfaadf88 in ?? ()
#13 0x08299108 in ?? ()
#14 0xb771b134 in ?? () from /usr/local/lib/compiz/libscheme.so
#15 0xbfaadf88 in ?? ()
#16 0xb767a280 in ?? () from /usr/lib/libguile.so.17
#17 0x00000003 in ?? ()
#18 0xb74d1580 in ?? ()
#19 0x0000000c in ?? ()
#20 0xb771ab93 in ?? () from /usr/local/lib/compiz/libscheme.so
#21 0xb74d2008 in ?? ()