I've been looking around for an answer to my problem but I can't find anything. My problem is that I recently bought a new computer, Lenovo G500, it has 2xUSB3 and 1xUSB2, Intel pentium I3 2.4 GHz x4 and 6 Gib memory, it came with windows 8 but I removed it and installed Ubuntu 14.04.
The problem is, if, lets say, I try to copy one folder/file (doesn't matter the size) from/to my hard drive from/to the usb device, I have a WD 1tb usb 3 external HD but it does it with usb pens or another HD I have, it will copy fine, with high speeds. However, if I was to start a second copy/transfer while the first one is still going it will make the copying speed for both actions almost come to a stand still and take several hours.
This is not the only problem, the other problem is that while the copying is going on if I open any windows or programs they will take a very long time (may be up to 1 min) to open/start.
If I open the system monitoring it tells me that only 10% (+ or -) CPU usage, so memory is not an issue.
Any ideas what could be going on?
Thank you very much in advance