Illusion of duplicate causes too many authors to appear after \cite

Question

I have a problem with the way my bibliographic references turn up in the text. I use JabRef to handle the bibliography. In my preamble, I use the option maxcitenames and mincitenames to make sure that multiple authors (more than 2) will only be cited as "Firstauthor et al." in the document itself, while all the authors are listed in the bibliography. However, I have encountered the following curious problem. Two different papers that I need to quote are both written by four different authors, the first of which is the same in both cases.

Concretely, the author "Wiklund" is the first author of both papers. What I want, is of course the first reference to appear in the text as (Wiklund et al. 2007), and the other as (Wiklund et al. 2009). But somehow, Biber (or perhaps the problem is JabRef) feels it has to cite the second author in both cases to distinguish between the two.

Here is a MWE and below is a picture of what it produces + the JABREF source of the two relevant entries. Notice that if I only reference one of these entries, everything works fine and only (Wiklund et al. 2007) or (Wiklund et al. 2009) appears. The problem is caused by the co-occurrence of these entries.

\documentclass[12]{article}

\usepackage[backend=biber, style=authoryear-comp, sortcites=false, maxcitenames=2, mincitenames=1, maxbibnames=4]{biblatex}

\addbibresource{flafla.bib}

\begin{document}

Some text\parencite{Wiklundetal2007}. Some more text \parencite{Wiklundetal2009}  

\printbibliography

\end{document}

@Article{Wiklundetal2009,
  author =  {Wiklund, Anna-Lena and Benzen, Kristine and Hrafnbjargarson, Gunnar Hrafn and Hróarsdóttir, Thorbjörg},
  title =   {On the distribution and illocution of V2 in Scandinavian that-clauses},
  journal = {Lingua},
  year =    {2009},
  volume =  {119},
  number =  {2},
  pages =   {1914-1938}
}

@Article{Wiklundetal2007,
  author =  {Wiklund, Anna-Lena and Hrafnbjargarson, Gunnar Hrafn and Hróarsdóttir, Thorbjörg and Bentzen, Kristine},
  title =   {Rethinking Scandinavian Verb Movement},
  journal = {Journal of Comparative Germanic Linguistics},
  year =    {2007},
  volume =  {10},
  pages =   {203-233}
}