Applications seem not to close, still appear in Alt-tab and in activity monitor

[wosto]

I've installed Zephyroth distro, natit and alc883 ext. Works ok, except that when i close applications (like opera, textedit, etc) i still see them when i press Alt-Tab or in the Activity Monitor, and seems like they're still using memory.

 

any ideas? My config is:

 

Athlon XP 64 x2 AM2 3600+

msi k9n neo -f

1GB DDR2 667

HD HITACHI SATA II 160GB

DVD LG ATA

GeForce 7100GS 256MB TC

 

Thanks!!

[Gujal]

How do you close the application? By clicking on the Red button on the corner of the window or pressing "Command-Q"?

 

If you are clicking on the red button, then you are not closing the application. You must use command-q