Wondering why you're getting this when you try to log-on to Twitter?
It's because Twitter's hosting provider, NTT America Enterprise Hosting Services, is currently upgrading a section of its internal network. This is an important part in Twitter's preparations to transfer its own data center to Utah later this year -- as it continues to stick to its strategic alliance with NTT, in the face of global success and continuous growth in membership.
System upgrade will begin on July 31, 2010 at 11 PM US Pacific Time or August 1, 2010 2PM Manila Time and will take around 5 hours to wrap up. Twitter will be on and off until the whole process has been completed.