The Konami ID website is up and running the fastest ever. Yes no more timing out errors. This is presumably due to the rumored additional servers that Konami said they'd add because of the extraordinary traffic. Enjoy.
Although you can still sign up for Konami/Game IDs the actual beta which you could play has been delayed.
Konami: "we will be making the following changes to the schedule:
1) Start date: Planned for 04/25/2008 24:00(PDT). While the start is planned for the weekend, it may change due to unforseen circumstances.
3) Beta Test closure: This will now be on 05/11/2008 at 24:00(PDT) rather than 05/05/2008 at 24:00(PDT)
Press release: http://www.konami.jp/mgo/us/index.html
IMPORTANT: Please note that your voucher code will only be valid up until 05/05/2008, so please make sure to register them by then.