Dell Latitude E6500 and E6400 are experiencing a 50% CPU " swallowing " error. (Photo: JmuEdu)
The same phenomenon was discovered with Dell XPS 1645 version on some other forums. Users complained that although running very smoothly with batteries, as soon as the 90 Watt adapter plugged in, the system began to work slowly. Some others said that if using a 130 Watt adapter instead of a 90 Watt type, the problem will be fixed and this adapter is provided by Dell for free.
This phenomenon, in fact, has been sent to Dell since early 2009, but the company has yet to respond.
Dell Latitude E6500