Any help/tips appreaciated. I have a linksys wifi router for my home LAN
(need convenience of LAN gaming besides general security and usage for
my laptop and a second PC in my home), wondering if my wifi security is
strong enough, if there is something else I can do? Set it up as WPA
encryption (Pre-shared key, TKIP) with 30 character random passphrase key
(with mix of lower/uppercase, numbers, symbols) MAC address filtering on,
SSID broadcast is on.

Everything I hear makes me think wifi is not very secure, I am a bit
spooked. I even heard WPA can now be cracked. What more can I do? I want
to set up a softare firewall at some point for my linux system, but when I
have done that in the past it really makes it hard or impossible for me to
do computer LAN gaming (or should I run the fireall, shut if off when I do
a LAN game which is really not that often?).