While there are various models affected (and it’s not just Dell), I’m just going to mention the two affected 13.3-inch models since we at Small-Laptops.com only cover 13.3-inch and smaller laptops.
Over at the Direct2Dell blog, Lionel Menchaca has laid out exactly what the problems could be, how to prevent them, and what to do if they are already occurring. Mainly, if you aren’t having problems, apply a BIOS update that adjusts the fan profiles/settings and that should prevent any problems (the software / BIOS links are at the bottom of the article). If you are already having problems, Dell will be happy to provide support under the terms of the system warranty.
If you have a Vostro 1310, make sure and update the BIOS to version A10, dated 7/10/08.
If you have an XPS M1330, make sure and update the BIOS to version A12, dated 7/9/08.
Like I said, it doesn’t just affect Dell, it affects a lot of manufacturers. As we hear more, we’ll keep you posted.