Segmentation fault

[freemandigger]

rTorrent 0.9.2/0.13.2

I have about 1500 active torrents and after first stop/start rtorrent wont work.

System:
2*16 core Xeon(R) CPU E5-2620 0 @ 2.00GHz
RAM: 64Gb
Disk: ~20Tb

$ rtorrent
Caught Segmentation fault, dumping stack:
0 rtorrent() [0x413365]
1 rtorrent() [0x44d390]
2 /lib/x86_64-linux-gnu/libc.so.6(+0x36480) [0x7fde50583480]
3 /usr/lib/libtorrent.so.14(+0x5889c) [0x7fde51bb589c]
4 /usr/lib/libtorrent.so.14(+0xb3ce0) [0x7fde51c10ce0]
5 /usr/lib/libtorrent.so.14(+0xb4172) [0x7fde51c11172]
6 /usr/lib/libtorrent.so.14(+0x3a61d) [0x7fde51b9761d]
7 /usr/lib/libtorrent.so.14(ZN7torrent11thread_base10event_loopEPS0+0xb4) [0x7fde51bdefd4]
8 rtorrent() [0x412881]
9 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed) [0x7fde5056e76d]
10 rtorrent() [0x412ec5]

$ uname -a
Linux server 3.2.0-29-generic #46-Ubuntu SMP Fri Jul 27 17:03:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

sysctl -a http://paste.ubuntu.com/1208825/

$ ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 515159
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 999999
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 515159
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited

[freemandigger]

usefull config .rtorrent.rc
$ cat .rtorrent.rc | grep -Pv '^#' | grep -Pv '^$'
directory = /mnt/files
session = /home/rt/.sessions
check_hash=no
port_range = 11111-11111
max_peers = 100
min_peers_seed = -1
max_peers_seed = -1
max_uploads = 50
use_udp_trackers=no
port_random=no
http_proxy="http://127.0.0.1:3128/"
dht=on
dht_port=11112
peer_exchange = yes
ratio.enable=
schedule = trafic,10,00:15:00,"execute={sh,-c,php /home/sites/rt/www/plugins/trafic/update.php& exit 0}"
encoding_list=utf-8
network.send_buffer.size = 1048576
max_memory_usage = 10737418240
network.max_open_files = 10240
network.max_open_sockets = 10240
network.http.max_open = 10240
scgi_port=localhost:5000
encryption = allow_incoming,try_outgoing,require_RC4