404. That’s an error.
The requested URL /files/autoproxy-0.3b4.0%2B.2009110800-fx%2Bsm%2Btb.xpi was not found on this server. That’s all we know.
/files/autoproxy-0.3b4.0%2B.2009110800-fx%2Bsm%2Btb.xpi