You must lock or "encrypt" your wallets!
Use good, long (10-character) random passwords!
Don't lose those passwords, or money is gone forever!
Then, back-up your wallets and passwords, and...
Keep those back-ups separate and safe.
Keep viruses and crap and people off your computer.
Good luck!
Also for windows xp to winsows 7
right click on "my computer" click on manage.
expand "local users and groups" then click users.
delete all support users. Also change "administrator" name to anything else.
rename user "guest" as "administrator" and disable it.
on manage window there is shared folders and sessions. expand it.
on shared folders, stop all shares, most important c$, ADMIN$
Those will turn your computer to a nightmare against newbie hackers.