New
#11
Thanks again for the comments.
I have attached a couple of interesting graphs - CPU activity and Disk C activity during a very slow internet download via Firefox. To do this, I have to open Task Manager and the Performance tab before starting the download - otherwise I cannot get the Task Manager to open.
When the internet download stalls - or almost - so does the Task Manager's update process - ie the graphs stop moving right to left - or at least hesitate for long periods like 15 or 20 seconds. Once the download completes - if it does - the CPU and Disk C activity remain high for about another 30 seconds before settling at lower levels. If I close Firefox, the disk and CPU activity also remain at a high level for about 30 seconds before reducing. The system disk (C) activity in presumably far too high. The disk is a Samsung SDD PM830 mSATA 256GB.