I have an iMac and MBP using OS X 10.6.6. I use the same username and password for my admin account on both. On each Mac, I can see the other one in Finder. I've enabled sharing and all the file permissions seem to be correct, but I have a problem when copying files. If, for example, I'm using my iMac and I try to copy a file to my MBP in Finder, I'm asked to "Type your password to allow Finder to make changes." Then I get a message "A newer item named "xxx.xxx already exists in this location. Do you want to replace it with the older one youre moving?" I click on yes, and then get "The operation cant be completed because an item with the name xxx.xxx already exists." In the example above when using Finder on the iMac, I can copy files from the MBP to the iMac but I get the errors when I try to copy from the iMac to the MBP. The same problem occurs when I'm working on the MBP and I try to copy files to the iMac. This seems strange as I can, for example, delete files on the second Mac in Finder, I just can't copy files to it. Can anyone tell me if this is normal, or could there be an issue with permissions or some other problem? Thanks.