Ah, yeah. If a proxy requires authentication, it definitely shouldn't work. Non-authenticating proxies probably don't due to testing. Given modern routers and software firewalls, it didn't cross my mind that anyone would go outside using anything more than a gateway setting :). So yeah, Dablo, if you're going through a real proxy, that'd do it.

For modules, there is shellfront, Loose-screws.com, and ls-universe.info (ls-universe.info is not set in OTS2, but themes will use it, and they have many newer modules).