Program received signal SIGSEGV, Segmentation fault.
0x40a22ccc in free () from /lib/libc.so.6
(gdb) bt
#0  0x40a22ccc in free () from /lib/libc.so.6
#1  0x40ca2280 in g_free () from /usr/lib/libglib-2.0.so.0
#2  0x0004baf0 in download_free_ddata (data_to_free=0x1e7fb8) at download.c:42
#3  0x0004bb5c in download_call_end (ddata=0x1e7fb8) at download.c:129
#4  0x0004bc80 in download_read_cb (handle=0x62615418, result=1086988928, buffer=0x1dcf08, bytes_requested=4096, bytes_read=0, callback_data=0x1e7fb8) at download.c:102
#5  0x40aebac0 in gnome_vfs_job_get_count () from /usr/lib/libgnomevfs-2.so.0
#6  0x0004bc80 in download_read_cb (handle=0x62615418, result=1086988928, buffer=0x0, bytes_requested=1900643287564524, bytes_read=8467923163054008, callback_data=0x4bb5c)
    at download.c:102
#7  0x40aeb9f0 in gnome_vfs_job_get_count () from /usr/lib/libgnomevfs-2.so.0
#8  0x40ac9000 in ?? () from /lib/libc.so.6
Cannot access memory at address 0x0
(gdb)