centos6升级firefox，XPCOMGlueLoad error for file /usr/lib64/firefox/libmozgtk.so: libgtk-3.so.0: ......

报错信息

[root@test firefox]# firefox 

XPCOMGlueLoad error for file /usr/lib64/firefox/libmozgtk.so:
libgtk-3.so.0: cannot open shared object file: No such file or directory

Couldn't load XPCOM.

解决方案：

[root@test bin]# yum install gtk2

然后再次启动firefox，正常打开