Out of sudden my Thunderbird and Firefox wont run because of this message:

Your Thunderbird profile cannot be loaded. It may be missing or inaccessible.
Your Firefox profile cannot be loaded. It may be missing or inaccessible.

Even running firefox/thunderbird --ProfileManager ends with the same error

I'm on Arch linux, latest packages. Tried also downgrading FF & TB - just in case. Apps stopped working after latest reboot (no system upgrade was done, just one app).

I can run TB and FF as root. My old profiles are commented out like .mozilla_ and .thunderbird_ so if I run FF it should create new .mozilla folder. Folder is successfully created but it is empty - no new profile folder nor profiles.ini file.

This is an example of freshly created .thunderbird directory in my Home

e@arch ~ $ l | grep thunderbird
drwx------  2 e    users     4096 Jan  2 22:17 .thunderbird

I tried to chmod .thunderbird to 777 with no luck. It looks to me like permission problem. What should I look for? Where is wrong?