The reason is that the adaptors can overheat, posing a fire or an electrical shock. Dell has received seven reports of incidents, although no one has been injured yet.
The manufacturer of the adaptors is Delta Electronics in Taiwan.
That manufacturer was responsible for adaptors which IBM recalled a month ago, see here.
The adaptors were used with Dell Latitude, Precision and Inspiron notebook PCs, with the following model numbers:
Latitude: CP, CPi, CPiA, CPtC, CPiR, CPxH, CPtV, CS, CSx, CPxJ, CPtS, C500, C510, C600, C610, C800, C810, V700, C-Dock, C-Port.
Inspiron: 2500, 2600, 3700, 3800, 4000, 4100, 4150, 5000, 5000e, 7500, 7550, 8000, 8100, Advanced Port Replicator, Docking Station. and Precision: M40.
Dell said customers with these adaptors, which were also sold separately between September 1998 and February 2002, should contact it for details of how to get a replacement.
It has put a site up specifically dealing with the problem, here.
Looks like Delta in Taiwan will be facing one hefty bill from both IBM and from Dell. ยต
* DELL RECALL HOTLINE in US is (800) 418-8590.