I am experiencing constant problems with Ubuntu 14.04. It seems like no matter what I do, the system is always slow. Also, I was constantly receiving notifications about Ubuntu having internal difficulty, or a system error had been detected. I used Time Shift, and restored the system to an earlier date. After that was complete, the error messages would still appear, and even after restoring the system to an earlier date, the system was still extremely slow. I ended up reinstalling the OS, and even though the speed has improved, I am still seeing messages about system program problems being detected. The machine is an older Toshiba Satellite that had previously run Windows XP. The laptop has a 200 GB HDD, 3 GB of ram, and an Intel Core 2 processor, so I thought that it would have no problems when it came to running Ubuntu. Should I be looking into a different OS? Can someone please suggest a way of figuring out why this system is running slow, and why these error messages appear multiple times a day? Thank you for your time, and I am looking forward to a reply.