I'm running an older iMac with OSX version 10.4.11 and is configured with 2.33 ghz intel core 2 duo and 2 GB mhz DDR SDRAM. I purchased this iMac in May/2007 and it has been flawless until now. My issue started when I went to edit an ad I had on Craigslist. I went to substitute a photo I had in iPhoto for a photo on my desktop. The photo substitution appeared to take ok. I closed out my Craigslist account page and went to the Craiglist site to see how my ad appeared, but my computer would not connect. After this I could not connect to any other site as well. The other issue is that now when I go to log out using the Apple icon in Safari or Firefox, within the drop down feature I am presented with 2 restart selections, 2 shutdown selections and 2 log out selections. There is also now a black border around one of my jpeg photo files that I keep on my desktop. This black border will move to another photo file on the desktop if I select it. If I open the photo, the border will now be around the photo. This black border will also follow me to my Mail on the font adjust button or to an email when I select it. I have 3 other users on this computer and they do not seem to be affected by the mysterious black border or the double restart, shutdown and log out selections. I have been plagued with an intermittent internet connection(AT&T DSL) for quite a while now, so I'm thinking this might have something to do with my glitch. I had a nice little chat with my AT&T customer service rep, and was told that I am now on a different connection, and I am now able to connect to sites using both Safari and Firefox. As I'm writing this my 10 year old son has informed that the iMac he uses at his school also has the mysterious black border. very, very odd. I would really like to get rid of the mysterious black border, and the double selections. Any advice please???