Suffering occasional system freezes

[ian_r_h]

Menu>System>Parttion Drives displays as follows:-



Process for installing LL was as follows:-

1) Boot and insert live DVD (currently version 3.6 64-bit)
2) Restart (CTRL-ALT-DEL)
3) Boot from Live DVD and select Live option
4) Connect to the Internet
5) Change software repos to local
6) Start the Install Linux Lite app
English
DO NOT download anything while installing!
Erase disk and install + encrypt for security
Enter encryption key + overwrite empty disk space
Locale:  London
English keyboard with extended WinKeys
Enter ID, etc.  + DO NOT encrypt home folder
Remove install media when prompted
7) Boot from HD at restart

(and so on).

Essentially, following the default installation instructions here, except for choosing to encrypt entire hard disk (and not to encrypt home folder).