Your system information

• Steam client version (build number or date): Aug 29
• Distribution (e.g. Ubuntu): Arch
• Opted into Steam client beta?: [Yes/No] No
• Have you checked for system updates?: [Yes/No] Yes

Please describe your issue in as much detail as possible:

Steam dumped core in after running for some time.

Aug 30 17:08:40 clown.man.machine systemd-coredump[1106]: Process 1103 (steam) of user 1000 dumped core.
                                                          
                                                          Stack trace of thread 1103:
                                                          #0  0x00000000f79687e0 __vfprintf_internal (libc.so.6 + 0x657e0)
                                                          #1  0x00000000f7a1ae87 __fprintf_chk (libc.so.6 + 0x117e87)
                                                          #2  0x00000000565c420f n/a (/home/dknight/.local/share/Steam/ubuntu12_32/steam + 0x3d20f)