Windows Firewall problem >.<

This is so annoying!!!
Every day, while i'm on the internet, Windows Firewall suddenly turns itself off, and stops my connection to my wifi. I have to then go into security settings and firewall and then turn the damn thing back on!
Why is this happening and how can i stop it?Here's my specs (if that's nessesary)
Acer Extensa 5230E
Intel Celeron processor 585
Windows Vista SP2
3GB ram
160GB HDDPlease help!

don't use windows firewall, its the IT equivalent of hiding from a hurricane behind a sheet of wet tissue paper. If you're using windows XP then sygate personal firewall is excellent, (get it from www.oldversion.com), if youre using vista then try comodo firewall.

Replying to #2

I use Comodo Anti-Virus and Internet Security Combo which includes the firewall in it.I can say that it is a VERY useful program. :)

Thanks Loony and Ace, i'll check those out :)