[R] ss's are incorrect from aov with multiple factors

[John Christie]

Hi,
	I have been trying to work with error terms given back from aov to 
make confidence intervals.  However, the numbers seem to be incorrect.  
If there is more than one term in the ANOVA then the error terms can be 
inflated by the number of factors in the extra terms.  The F's are 
correct so it is right back to the SS.  I was wondering if this is 
standard practice for stats programs or unique to R?