Just to expand on that Inc. i hope everyone clears the internet cache after any passworded internet transactions? - Bank, ebay, paypal etc etc etc
I have found this useful, efficient, easy to use and free, (best price of all).
CrapCleaner
Sorry to scare you but ................... VPN
Paranoid me? No I'm just worried about everything :D
Personally I don't really care about bandwith theft I get about 20GB that I never use up, then it's throttled not billed.
I just want to make sure no one decides to kill my registry or some other equally nice trick.
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Thread hijack
I spoke to someone today about wireless, they assured me that an expert, (read as: local paper) came and set up the wireless network. "We can't connect to the neighbours internet anymore so our security must be very good." *** Ignorance is bliss. ***

