Well, if they suspect you of buying gold even when you farmed it yourself, you will still get suspended. My account was hacked and deleted the other time and when I asked for a character restore, they see the gold I have and immediately put a hold on it. I can't prove myself (and I have already quit for about 8 months. I told them my intention was to farm so I can buy the epic flying mount asap after TBC. But you know what, its just damn great that something I worked so hard disappeared just like that. They would reinstate my account immediately only if I agreed to a gold deduction sum. They are definitely testing the limits of my patience right now!

how much gold do yo have that blizard considered it as a lot?

If your computer is connected via a DSL card/DSL modem with no firewall/nating.  Buy yourself a DSL router, with firewall, enable the firewall and block all incoming connections.  If you can't afford/find a DSL router with a firewall, get one with natting rules, and dissable all incoming NAT translations (The poor mans firewall).

Make sure you've got firewall software on your PC, then even if there is a open connection through your firewall router, the PC firewall should restrict the applications these IP Ports are allowed to use.

Current and updated anit virus and anti-spyware softare.

Make sure you OS, has the latest software updates and patchs.

NEVER play WoW at an Internet cafe.

NEVER lets others use your account, espiecally from other computers.

Chose a cyrptic password, and change it often.  Sometimes it's just a brute force attack that gets you.  e.g St4g%mOn75rS

Don't use WoW gold or leveling services - a lot of these a just outright scammers.

Don't click on links in WoW related forums, unless your very sure it's safe.  Some forums have exellent moderation, and squash scams fast.  Others are there just to scam you.  Infact be carefull of all the sites on the internet you visit.  Porn sites are infamous for install trojans, and spy-ware.

Don't use file sharing services such as Kazaa, thats just asking for trouble, espiecally if your downloading warez.

Be very carefull of the WoW mods you install, many of these now contain trojan key loggers.

There are very few actual skilled Hackers, the vast majority of people who do this stuff rely on toolkits developed by skilled hackers (Script kiddies).  So the will always go after the weekest targets.  Even a moderatly secure network, and some caution online will provide ample protection against 99.9% of the threats.

And make sure you backup you data.

Do some reading online on how to protect yourself, and keep up to date with the latest threats and scams.

After 10 years online, I've never been virused, trojaned or scammed. I may be paranoid, but a least I'm safe.