I bought an iMac G5 of ebay and it´s working fine at the moment. However, I wonder if it is covered with Apple´s warranty since I didn´t get the orginal receipt? When I bought the iMac, the seller seemed honest and I got the computer in a good shape, but now he is selling more rev. A´s and I don´t know how he got these iMacs. Let´s say that they are stolen...worst case senario...could Apple know that and just take the computer away from me if I would ask them how long this iMac is covered under the warranty or if I would need to have it fixed? Ps. I just had my video projector fixed under a warranty and I didn´t have to show my receipt, since all the data was registered in Philips database.