restarting TM after testing memory sticks

Having successfully installed a new internal drive and restored all the data to it using TM, I went inside the machine to double check if a pair of 1GB RAM sticks I had to remove to get all this to work was indeed faulty. I restarted with these inserted and a few things acted funny, so I shut down again and removed them.

This all required unplugging everything and thus resetting time, date, and TM when restarting the system. Everything seems to be working fine again except....the 'name' of the machine is now "Computer" or (as the master folder on the backup drive now has it) "Macintosh". Before now it was always identified on that folder as "(my name)'s Power Mac G5". Is this a harbinger of something bad to come that I may have accidentally changed by all the restarting, resetting, and opening/closing of the machine? Just nervous is all.....