When I start the debugger today, I got
Failed to find a current license. Unable to connect to the system specified in configuration file /tmp/gdbserver59423.xml
the evaluation should be valid until 31/7 2010 in terms of Release note?
Which build (from the installed Release Notes) of DS-5 do you have?
The first two releases (build 342 end-of-Feb and build 423 end-of-March) expired at the end of May.
The current release (build 472 end-of-April) is still valid. If you don't have it you can download it under <http://www.keil.com/ds5>
Is it possible you've got two copies installed and you're looking at the Release Notes of one and running the other?