Bug#574605: latex-beamer: nested itemize yields variable vertical space between items of the same level

[Vincent Lefevre]

Package: latex-beamer
Version: 3.07-2
Severity: normal

With the following example, one gets the following problems:
  * the vertical space between Item 2 and Item 3 is smaller than
    the one between Item 1 and Item 2,
  * the vertical space between Item 3.2 and Item 3.3 is smaller
    than the one between Item 3.1 and Item 3.2.

I've attached the PDF file I obtain.

The vertical space between items of the same level should remain
the same.

Since beamer changes the font size, I wonder whether this problem
is related to:

http://groups.google.com/group/comp.text.tex/browse_thread/thread/c675febb873cf73f/

----------------------------------------
\documentclass{beamer}
\usepackage[T1]{fontenc}
\usepackage{lmodern}

\usetheme{Boadilla}

\begin{document}

\begin{frame}
  \begin{itemize}
  \item Item 1
  \item Item 2
  \item Item 3
    \begin{itemize}
    \item Item 3.1
    \item Item 3.2
    \item Item 3.3
      \begin{itemize}
      \item Item 3.3.1
      \item Item 3.3.2
      \end{itemize}
    \end{itemize}
  \end{itemize}
\end{frame}

\end{document}
----------------------------------------

-- System Information:
Debian Release: squeeze/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.31-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=POSIX, LC_CTYPE=en_US.ISO8859-1 (charmap=ISO-8859-1)
Shell: /bin/sh linked to /bin/dash

Versions of packages latex-beamer depends on:
ii  latex-xcolor                  2.11-1     Easy driver-independent TeX class 
ii  pgf                           2.00-1     TeX Portable Graphic Format
ii  texlive-latex-base            2009-8     TeX Live: Basic LaTeX packages

latex-beamer recommends no packages.

latex-beamer suggests no packages.

-- no debconf information

itemize-beamer.pdf
Description: Adobe PDF document