Tried launching again in terminal, got:

asif@ubuntu-asif:~$ pidgin 

(pidgin:7747): GStreamer-CRITICAL **: gst_element_register: assertion `g_type_is_a (type, GST_TYPE_ELEMENT)' failed

(pidgin:7747): GStreamer-CRITICAL **: gst_element_register: assertion `g_type_is_a (type, GST_TYPE_ELEMENT)' failed
*** glibc detected *** pidgin: free(): invalid pointer: 0xb78fd224 ***
======= Backtrace: =========
/lib/tls/i686/cmov/libc.so.6[0xb75dc604]
/lib/tls/i686/cmov/libc.so.6(cfree+0x96)[0xb75de5b6]
/usr/lib/libglib-2.0.so.0(g_free+0x36)[0xb7808ff6]
/usr/lib/libglib-2.0.so.0(g_string_free+0x5c)[0xb782558c]
/usr/lib/pidgin/nautilus.so[0xb655d27a]
/usr/lib/libpurple.so.0(purple_marshal_VOID__POINTER+0x18)[0xb775a038]
/usr/lib/libpurple.so.0(purple_signal_emit_vargs+0xb1)[0xb775ab01]
/usr/lib/libpurple.so.0(purple_signal_emit+0x33)[0xb775ac43]
/usr/lib/libpurple.so.0(purple_blist_update_buddy_status+0x116)[0xb771c0f6]
/usr/lib/libpurple.so.0(purple_prpl_got_user_status+0xc8)[0xb7751ea8]
/usr/lib/purple-2/libmsn.so(msn_user_update+0x154)[0xb5f0ed84]
/usr/lib/purple-2/libmsn.so[0xb5f00368]
/usr/lib/purple-2/libmsn.so(msn_cmdproc_process_cmd+0xc6)[0xb5eeb546]
/usr/lib/purple-2/libmsn.so(msn_cmdproc_process_cmd_text+0x55)[0xb5eeb6c5]
/usr/lib/purple-2/libmsn.so(msn_servconn_process_data+0xa1)[0xb5f04a41]
/usr/lib/purple-2/libmsn.so[0xb5f04ba1]
pidgin[0x80a8e93]
/usr/lib/libglib-2.0.so.0[0xb7837c4d]
/usr/lib/libglib-2.0.so.0(g_main_context_dispatch+0x1e8)[0xb7800a58]
/usr/lib/libglib-2.0.so.0[0xb7803fbb]
/usr/lib/libglib-2.0.so.0(g_main_loop_run+0x1ca)[0xb780448a]
/usr/lib/libgtk-x11-2.0.so.0(gtk_main+0xb9)[0xb7af25c9]
pidgin(main+0x89a)[0x80c31ea]
/lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe5)[0xb7583775]
pidgin[0x806db61]
======= Memory map: ========
08048000-0810e000 r-xp 00000000 08:05 233969     /usr/bin/pidgin
0810e000-0810f000 r--p 000c5000 08:05 233969     /usr/bin/pidgin
0810f000-08112000 rw-p 000c6000 08:05 233969     /usr/bin/pidgin
097e1000-0aea1000 rw-p 097e1000 00:00 0          [heap]
b2871000-b28a2000 rw-p b2871000 00:00 0 
b28a2000-b2902000 rw-s 00000000 00:08 3637272    /SYSV00000000 (deleted)
b2902000-b2962000 rw-s 00000000 00:08 3604503    /SYSV00000000 (deleted)
b2962000-b29ee000 r--p 00000000 08:05 103277     /usr/share/fonts/truetype/ttf-dejavu/DejaVuSans-Bold.ttf
b29ee000-b2a1d000 r--p 00000000 08:05 11237      /usr/share/fonts/truetype/ttf-droid/DroidSans-Bold.ttf
b2a1d000-b2aec000 rw-p b2a1d000 00:00 0 
b2aec000-b2b80000 r-xp 00000000 08:05 59212      /usr/lib/libaspell.so.15.1.4
b2b80000-b2b83000 r--p 00093000 08:05 59212      /usr/lib/libaspell.so.15.1.4
b2b83000-b2b84000 rw-p 00096000 08:05 59212      /usr/lib/libaspell.so.15.1.4
b2b84000-b2b88000 rw-p b2b84000 00:00 0 
b2b88000-b2bc7000 r-xp 00000000 08:05 19194      /usr/lib/libhunspell-1.2.so.0.0.0
b2bc7000-b2bc8000 r--p 0003e000 08:05 19194      /usr/lib/libhunspell-1.2.so.0.0.0
b2bc8000-b2bcc000 rw-p 0003f000 08:05 19194      /usr/lib/libhunspell-1.2.so.0.0.0
b2bd2000-b2bda000 r-xp 00000000 08:05 59318      /usr/lib/enchant/libenchant_hspell.so
b2bda000-b2bdb000 r--p 00007000 08:05 59318      /usr/lib/enchant/libenchant_hspell.so
b2bdb000-b2bdd000 rw-p 00008000 08:05 59318      /usr/lib/enchant/libenchant_hspell.so
b2bdd000-b2be1000 r-xp 00000000 08:05 59320      /usr/lib/enchant/libenchant_myspell.so
b2be1000-b2be2000 r--p 00003000 08:05 59320      /usr/lib/enchant/libenchant_myspell.so
b2be2000-b2be3000 rw-p 00004000 08:05 59320      /usr/lib/enchant/libenchant_myspell.so
b2be3000-b2bee000 r-xp 00000000 08:05 59319      /usr/lib/enchant/libenchant_ispell.so
b2bee000-b2bef000 r--p 0000a000 08:05 59319      /usr/lib/enchant/libenchant_ispell.so
b2bef000-b2bf0000 rw-p 0000b000 08:05 59319      /usr/lib/enchant/libenchant_ispell.so
b2bf0000-b2c1f000 r--p 00000000 08:05 11320      /usr/share/fonts/truetype/ttf-droid/DroidSans.ttf
b2c1f000-b2c25000 r--s 00000000 08:05 73021      /var/cache/fontconfig/945677eb7aeaf62f1d50efc3fb3ec7d8-x86.cache-2
b2c25000-b2c28000 r--s 00000000 08:05 229616     /var/cache/fontconfig/a755afe4a08bf5b97852ceb7400b47bc-x86.cache-2
b2c28000-b2c2b000 r--s 00000000 08:05 229615     /var/cache/fontconfig/515ca1ebc4b18308bea979be5704f9db-x86.cache-2
b2c2b000-b2c32000 r--s 00000000 08:05 229608     /var/cache/fontconfig/6d41288fd70b0be22e8c3a91e032eec0-x86.cache-2
b2c32000-b2c35000 r--s 00000000 08:05 229607     /var/cache/fontconfig/de156ccd2eddbdc19d37a45b8b2aac9c-x86.cache-2
b2c35000-b2c3d000 r--s 00000000 08:05 223383     /var/cache/fontconfig/e3de0de479f42330eadf588a55fb5bf4-x86.cache-2
b2c3d000-b2c48000 r--s 00000000 08:05 223379     /var/cache/fontconfig/0f34bcd4b6ee430af32735b75db7f02b-x86.cache-2
b2c48000-b2c6a000 r--s 00000000 08:05 223365     /var/cache/fontconfig/365b55f210c0a22e9a19e35191240f32-x86.cache-2
b2c6a000-b2c71000 r--s 00000000 08:05 223364     /var/cache/fontconfig/d52a8644073d54c13679302ca1180695-x86.cache-2
b2c71000-b2c77000 r--s 00000000 08:05 46178      /var/cache/fontconfig/089dead882dea3570ffc31a9898cfb69-x86.cache-2
b2c77000-b2c91000 r--s 00000000 08:05 14178      /usr/share/mime/mime.cache
b2cf3000-b2d24000 rw-p b2cf3000 00:00 0 
b2d24000-b2d43000 r-xp 00000000 08:05 115591     /usr/lib/libneon-gnutls.so.27.1.2
b2d43000-b2d44000 r--p 0001e000 08:05 115591     /usr/lib/libneon-gnutls.so.27.1.2
b2d44000-b2d45000 rw-p 0001f000 08:05 115591     /usr/lib/libneon-gnutls.so.27.1.2
b2d45000-b2d9c000 r-xp 00000000 08:05 85065      /usr/lib/libsndfile.so.1.0.17
b2d9c000-b2d9d000 r--p 00057000 08:05 85065      /usr/lib/libsndfile.so.1.0.17
b2d9d000-b2d9e000 rw-p 00058000 08:05 85065      /usr/lib/libsndfile.so.1.0.17
b2d9e000-b2da2000 rw-p b2d9e000 00:00 0 
b2da4000-b2dab000 r--s 00000000 08:05 40821      /var/cache/fontconfig/e13b20fdb08344e0e664864cc2ede53d-x86.cache-2
b2dab000-b2dad000 r--s 00000000 08:05 19530      /var/cache/fontconfig/7ef2298fde41cc6eeb7af42e48b7d293-x86.cache-2
b2dad000-b2db3000 r--s 00000000 08:06 8954034    /home/asif/.fontconfig/9644730ee198bb8925905a37246c90ec-x86.cache-2
b2db3000-b2dcc000 r-xp 00000000 08:05 45611      /usr/lib/gstreamer-0.10/libgstasf.so
b2dcc000-b2dcd000 ---p 00019000 08:05 45611      /usr/lib/gstreamer-0.10/libgstasf.so
b2dcd000-b2dce000 r--p 00019000 08:05 45611      /usr/lib/gstreamer-0.10/libgstasf.so
b2dce000-b2dcf000 rw-p 0001a000 08:05 45611      /usr/lib/gstreamer-0.10/libgstasf.so
b2dcf000-b2de9000 r-xp 00000000 08:05 77210      /usr/lib/libcdio.so.7.1.0
b2de9000-b2dea000 r--p 00019000 08:05 77210      /usr/lib/libcdio.so.7.1.0
b2dea000-b2deb000 rw-p 0001a000 08:05 77210      /usr/lib/libcdio.so.7.1.0
b2deb000-b2def000 rw-p b2deb000 00:00 0 
b2df1000-b2df6000 r-xp 00000000 08:05 234148     /usr/lib/gstreamer-0.10/libgstneonhttpsrc.so
b2df6000-b2df7000 r--p 00004000 08:05 234148     /usr/lib/gstreamer-0.10/libgstneonhttpsrc.so
b2df7000-b2df8000 rw-p 00005000 08:05 234148     /usr/lib/gstreamer-0.10/libgstneonhttpsrc.so
b2df8000-b2dfe000 r-xp 00000000 08:05 234164     /usr/lib/gstreamer-0.10/libgstsndfile.so
b2dfe000-b2dff000 r--p 00006000 08:05 234164     /usr/lib/gstreamer-0.10/libgstsndfile.so
b2dff000-b2e00000 rw-p 00007000 08:05 234164     /usr/lib/gstreamer-0.10/libgstsndfile.so
b2e00000-b2e17000 r-xp 00000000 08:05 69010      /usr/lib/gstreamer-0.10/libgstschro.so
b2e17000-b2e18000 r--p 00016000 08:05 69010      /usr/lib/gstreamer-0.10/libgstschro.so
b2e18000-b2e19000 rw-p 00017000 08:05 69010      /usr/lib/gstreamer-0.10/libgstschro.so
b2e19000-b2e1a000 rw-p b2e19000 00:00 0 
b2e1a000-b2e2a000 r-xp 00000000 08:05 71920      /usr/lib/gstreamer-0.10/libgstxvimagesink.so
b2e2a000-b2e2b000 r--p 0000f000 08:05 71920      /usr/lib/gstreamer-0.10/libgstxvimagesink.so
b2e2b000-b2e2c000 rw-p 00010000 08:05 71920      /usr/lib/gstreamer-0.10/libgstxvimagesink.so
b2e2c000-b2e32000 r-xp 00000000 08:05 62023      /usr/lib/gstreamer-0.10/libgstgoom2k1.so
b2e32000-b2e33000 r--p 00005000 08:05 62023      /usr/lib/gstreamer-0.10/libgstgoom2k1.so
b2e33000-b2e34000 rw-p 00006000 08:05 62023      /usr/lib/gstreamer-0.10/libgstgoom2k1.so
b2e34000-b2e74000 rw-p b2e34000 00:00 0 
b2e74000-b2e78000 r-xp 00000000 08:05 234111     /usr/lib/gstreamer-0.10/libgstbayer.so
b2e78000-b2e79000 r--p 00003000 08:05 234111     /usr/lib/gstreamer-0.10/libgstbayer.so
b2e79000-b2e7a000 rw-p 00004000 08:05 234111     /usr/lib/gstreamer-0.10/libgstbayer.so
b2e7a000-b2e82000 r-xp 00000000 08:05 62029      /usr/lib/gstreamer-0.10/libgstid3demux.so
b2e82000-b2e83000 r--p 00007000 08:05 62029      /usr/lib/gstreamer-0.10/libgstid3demux.so
b2e83000-b2e84000 rw-p 00008000 08:05 62029      /usr/lib/gstreamer-0.10/libgstid3demux.so
b2e84000-b2e93000 r-xp 00000000 08:05 116116     /usr/lib/libmpcdec.so.3.1.1
b2e93000-b2e94000 rw-p 0000e000 08:05 116116     /usr/lib/libmpcdec.so.3.1.1
b2e96000-b2ea3000 r-xp 00000000 08:05 62033      /usr/lib/gstreamer-0.10/libgstjpeg.so
b2ea3000-b2ea4000 r--p 0000c00Aborted (core dumped)
asif@ubuntu-asif:~$