\documentclass{article}
\begin{filecontents}{test.bib}
@article{author99,
title = {A fine title},
year = {1899},
author = {An Author and Another Bauthor and Yeta Cauthor},
journal = {Madness}
}
@article{author05,
title = {The best title},
year = {1905},
author = {An Author and More Dauthors and Whois Thisauthor and Heis Thatauthor},
journal = {Insanity}
}
\end{filecontents}
\usepackage[%
style=authoryear,
bibstyle=authoryear,
backend=biber,
maxbibnames=99,
maxnames=2,
firstinits=true,
uniquename=init]{biblatex}
\addbibresource{test.bib}
\begin{document}
\noindent
\parencite{author99} \\ \parencite{author05}.
\printbibliography
\end{document}

As you can see from the image, when the first author is identical, two of the authors are printed in the citation, even if the year of the articles are different. I don't want this, but only the one author, e.g.
(Author et al. 1899)
(Author et al. 1905)
I've tried setting maxcitenames=1, but that didn't make any difference. Is it it possible to achieve this?
Edit: I'm running TeXlive 2010 on Windows 7, Biblatex version 1.4b with Biber 0.9.