Basic WI-FI secuirty setup is good enough to block casual
intruder.
Secuirty setup with the "Mac" addreess will enhence your
protection.
(this Mac has nothing to do with "Apple")
But still if your intruder is an expert, don't bother, they are all
out to get into your network.
You might want check on your own PC first by:
1) Run a virus scan (or how long you have not updated your virus
software?)
2) When is the last time you "defrag" your HD?
3) did you open too many program at a time, therefore drained your
"RAM"?
4) wireless network setup, if everything is "Auto" then your
wireless device (on your laptop or PC) will from time to time
rescan, re-establish the wireless connection without your actual
knowledge, therefore slow down your internet surfing.
5) don't surf the internet, just run your normal program on the
laptop and see if the performance is slow. if it is, then you might
have drained your "RAM" too much.
6) double check, by disconnect your wireleess access (your laptop
to the wireless modem, but still allow the wireless modem running
and connect to the internet) use a cable to link your laptop to the
internet and surf. See how much different it is, then (4) might be
the issue, so you mightt have to fine tune
I am not a computer expert, but after so many years of using
windows and netwrok, this is my experience and some small trick
from the expert.
Have fun
