A big group of Dutch Second Life residents haven't been able to use the grid for the last 2 weeks. Specifically customers of the Dutch ISP XS4ALL.
Menno Ophelia is one of the affected and he told me: "...basically i can login, but within a minute I can't move my avatar anymore, quickly followed after that ims stop working and then the mini map turns red and I get disconnected. This is going on for over a week now..."
The problem is big enough that a story about it appeared on the Dutch news site nu.nl, they report that the problem is somewhere in the USA. According to the reports on the Jira, something is wrong in the connection between Sprint and XS4ALL. A more in dept explanation can be found in the comment of Jira. When i write this 111 people voted on the issue, making it the 2nd highest issue on Jira, showing that a large enough number of people see it as a big problem.
So far the problem seems out of the control of Linden Lab to fix. Hopefully they will be able to work with Sprint and find a solution. This reminds of the email problem between Dreamhost and LL, which seemed only to get fixed after a lot of people complained about it to both sides. So speak up if you can't connect and hopefully it will get you, Menno and my other fellow Dutchies back on the grid. They are being missed.
Update: The problem only occurs on sims that are located in San Francisco, and not on those in Texas. You can use http://neighbours.maxcase.info/ to see where your favorite sims are located. The info might be old or incorrect, ask a buddy to grab a hud and go visit the sims so the info gets updated.