Fsck is the file system check that's run every time you start up your computer. It's more of a root level disk first aid. Here are details on why and how and when to run it: http://docs.info.apple.com/article.html?artnum=106214 Yes, Apple still fixes things on your Cube under AppleCare, as should any AASP. If you need to have your Cube serviced, call the AppleCare phone number and if the CSR feels that your problem is hardware related, and not software related, they will give you instructions on how to send it in for service. Laurie -- AOL IM/iChat: cubeownernyc http://www.cubeowner.com Home of The Mac Cube FAQ! On 1/12/03 6:26 PM, martylev at telus.net typeth: > Yikes! Good thing I have Applecare still. What is "fsck"? If it did turn > out to be the logic board, does anyone know if can Apple still fix/replace > that on my cube? > > -Marty