[OS X TeX] Beamer, columns within itemize

[Berend Hasselman]

It looks like beamer is not taking into account the labelwidth and  
label separation.
I tried to get what you want by preceding the first \begin{column}  
with an indent.
See this hack (horrible but it works)

\documentclass{beamer}

\newcommand{\ColIndent}{\hspace{\labelwidth}\hspace{\labelsep}}

\begin{document}

\begin{frame}
    \frametitle{Title}
    \begin{itemize}
        \item Fruit
            %\rule{\linewidth}{.4pt}
            \begin{columns}[totalwidth=\linewidth,t]
            \ColIndent
                \begin{column}{.48\linewidth}%with .5 column sep is  
very small.
                    Enter text into the left column
                \end{column}
                \begin{column}{.48\linewidth}
                    Enter text into the right column
                \end{column}
            \end{columns}
        \item Vegetable
    \end{itemize}
\end{frame}

\end{document}

Warning: if you replace the \ColIndent before the \begin{column} don't  
forget to put a % after the last \hspace{..}.
If you don't then extra whitespace is inserted before the first column  
(and it won't line up properly).

best

Berend