Wrong results from anova

Hi all,
   I have following data. When I perform an anova, the residual sum of
square returns to be zero.
But this is wrong, since we can hand calculate the RSS to be around 0.0308.
   Did anyone come across the same problem before? Any suggestions?
   Thanks.
     Hanna

ydata

         Y sample.Y
1   0.477      0.5
2   0.477      0.5
3   0.478      0.5
4  27.320       27
5  27.420       27
6  27.300       27
7  29.440       29
8  29.620       29
9  29.610       29
10 35.840       35
11 35.900       35
12 35.850       35

fit.Y <- aov(Y~sample.Y, data=ydata)
summary(fit.Y)

             Df Sum Sq Mean Sq F value Pr(>F)
sample.Y     3   2203   734.2  190706 <2e-16 ***
Residuals    8      0     0.0
---
Signif. codes:  0 ?***? 0.001 ?**? 0.01 ?*? 0.05 ?.? 0.1 ? ? 1

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