Version:           0.50.80 (using KDE 4.1.0)
Installed from:    Ubuntu Packages
OS:                Linux

With the auto spell check feature turned on, Kopete checks the word as the user is typing each letter, I can see that because it is red. When typing the word "something" it will turn back after you have "some" and red again when you add the "t". Perhaps it would be more appropriate if the spell check and take effect after the user adds a non alpha numeric character (space, comma, period).