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During the downtime today, Sunday 21st September, we deployed a new feature to Tranquility. The Stargate will now check how many players there are in the system and deny access if you attempt to jump into it when too many players are present. In addition to this you will not be able to login on a character if the system has too many players. We have also increased the amount of GMs this evening and if you are unable to login, please press the ESC button and submit a petition in the Stuck category.
This is a temporary solution to this issue, we are working on a permanent feature which has the highest priority and will be implemented as soon as possible.
The above is the announcement that the developers at EVE posted, just got it on my RSS feed. This is a stop gap solution at best but it should have the effect of moving people out of the core systems a bit and thus help with the problem. Expect systems like Jita however to stay in perpetual lockdown.
I have a soap box and I am not afraid to use it.