anyone has luck with the Premium appointment in the last 1 week. Able to see the appointment and time slot, but after that the site is crashing all the time. Any tips/suggestions would be really appreciated

I am a Tier 1 PSW holder (valid till Dec 2011). My wife holds a Tier 1 (General) visa valid till Jan 2012. We both are working at London. 1) I would like to apply for Tier 1 (General) - Dependant. Can I do that from UK, or should I be going back to the place of origin to switch from Tier 1 PSW to ...