Rstudio在ubuntu10.04中中文支持的问题

在ubuntu10.04上面装了Rstudio0.97.551后发现输入中文显示空白，然后输入

"中文"

回车，显示的是所有字符重叠的结果，不知道是何原因？请各位大神指教。

另外，系统编码为utf8

<br />
> sessionInfo()<br />
R version 3.0.1 (2013-05-16)<br />
Platform: i486-pc-linux-gnu (32-bit)</p>
<p>locale:<br />
 [1] LC_CTYPE=en_US.UTF-8<br />
 [2] LC_NUMERIC=C<br />
 [3] LC_TIME=en_US.UTF-8<br />
 [4] LC_COLLATE=en_US.UTF-8<br />
 [5] LC_MONETARY=en_US.UTF-8<br />
 [6] LC_MESSAGES=en_US.UTF-8<br />
 [7] LC_PAPER=C<br />
 [8] LC_NAME=C<br />
 [9] LC_ADDRESS=C<br />
[10] LC_TELEPHONE=C<br />
[11] LC_MEASUREMENT=en_US.UTF-8<br />
[12] LC_IDENTIFICATION=C       </p>
<p>attached base packages:<br />
[1] stats     graphics  grDevices<br />
[4] utils     datasets  methods<br />
[7] base     </p>
<p>loaded via a namespace (and not attached):<br />
[1] tools_3.0.1<br />

</p>