Fixed spacing between two footnotes containing latin and latin+arabic text

[meho_r]

Hi,

I have a document with main text in latin, but it contains arabic text
from time to time. Since arabic tends to get positioned higher or
lower than latin text when mixed with it, TeX makes sure that there is
no overlapping so it extends line spacing if necessary (which really
can look weird). To solve this, I set \lineskiplimit=-1000pt in the
Preamble, risking that some overlapping occurs (I'll make sure this
does not happen manually rather than let TeX do it).

However, there is a problem with footnotes: spacing between a footnote
containing only latin text and the one containing latin and arabic
text gets larger than those containing latin text only. E.g.:

1 Author 1, 2009
2 Author 2, 2009
3 Author 3 (and his name in arabic), 2009
4 Author 4, 2009
5 Author 5, 2009

In this example, spacing after 3rd footnote text is larger than
between others (at zoom 1600% in Adobe Reader, spacing between letters
"o" in word "Author" is 181px for all footnotes except 3rd, after
which it is 193px.) So, how to make sure that this spacing is even, no
matter does text contain arabic or not?

P.S. I'm using setspace package (disemulated it first, of course,
because of memoir), but it doesn't affect footnotes anyway. Also, this
appears with xelatex and arabxetex too.

Here's a complete simplified example:

%%%%%%%%%%%%%%%%%%

\documentclass[12pt]{memoir}

\usepackage[utf8]{inputenc}
\usepackage[LAE,T1]{fontenc}

\usepackage[arabic,croatian]{babel}

\DisemulatePackage{setspace}
\usepackage{setspace}
\setstretch{1.1}

\lineskiplimit=-1000pt

\begin{document}

Test\footnote{Author 1, 2009}
Test\footnote{Author 2, 2009}
Test\footnote{Author 3 (\textAR{أبو حامد الغزابي}), 2009}
Test\footnote{Author 4, 2009}
Test\footnote{Author 5, 2009}

\end{document}

%%%%%%%%%%%%%%%%%%

[meho_r]

NOTE: Although the arabic text isn't displayed correctly, the issue
still can be seen (this time between 2nd and 3rd footnote).