Hello I can also report that I am affected version 2.1.5 rincewind, 
it seems that the problem appears with some kind of network streams.

here is a stack trace:

nickapos@nickapos-Lenovo-B590:~ >gdb vlc
GNU gdb (Ubuntu 7.7-0ubuntu3) 7.7
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Reading symbols from vlc...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/bin/vlc 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
VLC media player 2.1.5 Rincewind (revision 2.1.5~ppa1)
[New Thread 0xb5a9fb40 (LWP 8497)]
[New Thread 0xb528cb40 (LWP 8498)]
[New Thread 0xb50e0b40 (LWP 8499)]
[0x804c8f8] main libvlc: Εκτέλεση του VLC με την προεπιλεγμένη διεπαφή. Χρησιμοποιήστε το 'cvlc' για να εκτελέσετε το VLC χωρίς διεπαφή.
[New Thread 0xb505fb40 (LWP 8500)]
[New Thread 0xaecffb40 (LWP 8501)]
"sni-qt/8493" WARN  09:28:20.987 void StatusNotifierItemFactory::connectToSnw() Invalid interface to SNW_SERVICE 
[New Thread 0xaea8bb40 (LWP 8506)]
[Thread 0xaea8bb40 (LWP 8506) exited]
[New Thread 0xaea8bb40 (LWP 8507)]
[Thread 0xaea8bb40 (LWP 8507) exited]
[New Thread 0xaea8bb40 (LWP 8508)]
[New Thread 0xaaf62b40 (LWP 8509)]
[New Thread 0xaa70fb40 (LWP 8510)]
[New Thread 0xa9ebcb40 (LWP 8511)]
[New Thread 0xa96bbb40 (LWP 8512)]
[New Thread 0xa963ab40 (LWP 8513)]
[New Thread 0xa91f1b40 (LWP 8514)]
Fontconfig warning: FcPattern object size does not accept value "0"
Fontconfig warning: FcPattern object size does not accept value "0"
[New Thread 0xa8e72b40 (LWP 8515)]
Fontconfig warning: FcPattern object size does not accept value "0"
Fontconfig warning: FcPattern object size does not accept value "0"
[0xad33d9b8] main vout display error: Failed to resize display
[Thread 0xa96bbb40 (LWP 8512) exited]
[Thread 0xaaf62b40 (LWP 8509) exited]
[Thread 0xaa70fb40 (LWP 8510) exited]
[Thread 0xa9ebcb40 (LWP 8511) exited]
[Thread 0xa963ab40 (LWP 8513) exited]
[Thread 0xa91f1b40 (LWP 8514) exited]
[Thread 0xaea8bb40 (LWP 8508) exited]
[New Thread 0xaea8bb40 (LWP 8516)]
[0xad33d9b8] main vout display error: Failed to resize display

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xaea8bb40 (LWP 8516)]
0xab6d9322 in ?? () from /usr/lib/i386-linux-gnu/i686/cmov/libavcodec.so.54
(gdb) bt
#0  0xab6d9322 in ?? () from /usr/lib/i386-linux-gnu/i686/cmov/libavcodec.so.54
#1  0xab6dc0f2 in ?? () from /usr/lib/i386-linux-gnu/i686/cmov/libavcodec.so.54
#2  0xab9d17d0 in avcodec_decode_audio4 ()
   from /usr/lib/i386-linux-gnu/i686/cmov/libavcodec.so.54
#3  0xad1a9418 in ?? ()
   from /usr/lib/i386-linux-gnu/i686/cmov/libavformat.so.54
#4  0xad1b0b1a in avformat_find_stream_info ()
   from /usr/lib/i386-linux-gnu/i686/cmov/libavformat.so.54
#5  0xad6fe18a in ?? () from /usr/lib/vlc/plugins/demux/libavformat_plugin.so
#6  0xb7d62aa0 in ?? () from /usr/lib/libvlccore.so.7
#7  0xb7d62b0b in ?? () from /usr/lib/libvlccore.so.7
#8  0xb7d63136 in vlc_module_load () from /usr/lib/libvlccore.so.7
#9  0xb7d63612 in module_need () from /usr/lib/libvlccore.so.7
#10 0xb7d1cee4 in ?? () from /usr/lib/libvlccore.so.7
#11 0xb7d2a838 in ?? () from /usr/lib/libvlccore.so.7
#12 0xb7d2b81d in ?? () from /usr/lib/libvlccore.so.7
#13 0xb7d2f854 in ?? () from /usr/lib/libvlccore.so.7
#14 0xb7f8df70 in start_thread (arg=0xaea8bb40) at pthread_create.c:312
#15 0xb7ebe70e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:129
(gdb)