not the compile error.. :-)

User accesses website via mobile phone, Moto Q in this case.
Logs in, presented with the first simple screen.
Clicks Mailbox
one account goes to a folder located in their cabinet
another account goes to a different folder
my account goes to my sent items folder

I can reproduce this with Firefox on my workstation, by checking the
Use basic interface box prior to logging in..

have deleted cache/templates/restarted webaccess & components/restarted server.