2 years ago I bought relatives a new computer for christmas and installed Ubuntu on it. Ever since then it has been experiencing problems with the hard drives. The hard drive supplied with the machine was a SATA drive. When it appeared it was having problems (files and folders with invalid encoding started appearing) I replaced the SATA drive with the drive of their previous computer.
I replaced it (The replacement) later on, the drive being rather old and thus becoming more prone to the risk of failure. The replacement drive is a IDE drive but the same problems started to appear (files and folders showing up in nautilus with invalid encoding).
I fear the files and folders that are showing are existing FS entries, starting to corrupt. As it's happening to both the IDE and SATA drive it's unlikely to be the drives themselves or the IDE/SATA controller, I believe.
Any ideas as to what could be causing the (assumed) corruption?
EDIT: You're right about the paragraphs. They were there in edit mode but I'm still getting to grips with the whitespace format codes.
The system is a "Primo Pro" AMD Phenom II X4 Quad Core 920 2.80GHz SILENT DDR2, ordered from overclockers.co.uk and nothing has been added to it except for the replacement of the SATA drive with an AMD drive. It would seem unlikely for a barebones system to be underpowered.