Comment 4 for bug 124262

***MEMORY-WARNING***: firefox-bin[17906]: GSlice: g_thread_init() must be called before all other GLib functions; memory corruption due to late invocation of g_thread_init() has been detected; this program is likely to crash, leak or unexpectedly abort soon...

is not an error its a warning, this warning has nothing to do with profile issue. Rejecting bug because as it is known all over the place, We(ubuntu-mozillateam) will be working on something for that warning, anyway all apps that use glibc will have this warning.
please open a bug on the profile issue if there is an issue outside of the warning you are getting and please use the Help>Report a bug entry from firefox help menu to report firefox bugs from now on as it will give us alot of info we need to proceed with bugs.