Sidekick users raged against their machines on Monday, as service provider Danger fought to isolate issues that disconnected the hip phones from email, instant messaging and other data services. <A HREF="http://news.zdnet.com/2100-1040_22-5603252.html?tag=zdnn.alert">The outages are the latest issues</A> plaguing the mobile phone and Internet services provided by Danger and T-Mobile. Both companies have come under scrutiny as the means by which online thieves managed to steal the addresses, email messages and images from the Sidekick of celebrity heiress Paris Hilton last year, an incident that came to light last month.