Pootle does not response with translation archive upload

l10n
#1

Hi,

Because of Pootle being so unstable, I work offline to save my time.

However, I keep encountering uploading error recently. The most frequent
problem met is "504 Gateway Time-out" with large file such as
libo_ui/officecfg/registry/data/org/openoffice/Office/UI.po which is 733 kb
in my case while other smaller files are fine. (Sorry that I don't know
what it mean actually)

Is this problem could solved? The problem blocks my workflow and I don't
want to proceed one translation by one and waiting for the slow response of
Pootle.

Thanks.