There may be problems with other laptops that use the same battery:

The Sony batteries are also used in laptops from Hewlett-Packard Co. (NYSE:HPQ – news), Apple Computer Inc. (Nasdaq:AAPL – news) and Lenovo Group Ltd. (0992.HK).
“We are looking at the complete scope of the batteries made by Sony to ensure that no other consumers are in harm’s way,” U.S.
Consumer Product Safety Commission spokesman Scott Wolfson said. “We recognize that the batteries manufactured by Sony are not unique to just the Dell notebook computers.”
Such batteries are also used in a wide array of gadgets including cellphones, digital cameras, camcorders and music players, and Wolfson added that the safety commission is encouraging companies and consumers to report potential defects in other devices using the battery cells but the focus for now was on laptops.
[…]
“It’s probably not Dell-specific,” said the president of market researcher Endpoint Technologies Associates, Roger Kay. “If they have the Sony cell, specifically the cell made between April 2004 and June 2006, they have the problem.”
[…]
A Sony spokesman in Tokyo said on Tuesday the overheating problem is believed to be specific to batteries supplied to Dell, but recall decisions are up to each maker.
Hewlett-Packard, the world’s No. 2 PC maker, said it was not affected by recall. “It’s a Dell issue,” spokesman Ryan Donovan said.
Apple Computer Inc. (AAPL.O) on Monday said it was looking into the matter.
A spokesman for Lenovo Group Ltd. (0992.HK), the third-largest PC maker by market share, said the company was not recalling any batteries “at this time.”

BTW, a Dell representative left spam in the comment section of this post. I’m leaving it for the benefit of those who have a Dell and want the contact information.