iWeb keeps freezing

[c073186]

I have iWeb '08 and Leopard and every so often, at completely random times, iWeb freezes. I cannot even Force Quit, my computer is completely locked. I have to hold down the power button. I have all of the latest updates. Any ideas as to the cause and possibly a solution?

PS: Is there any way other than the Command + Option + Esc to force an application to close?

 

[c073186]

I just performed the Repair Permissions on Macintosh HD and got the following results:

ACL found but not expected on "Applications/Utilities".
ACL found but not expected on "Applications".
ACL found but not expected on "Library".

Permissions repair complete

What does that mean?