Apache 2.2.4 and svn 1.4.3 and others

Hi there!

Please excuse me, if you receive this message twice. S.t. went wrong
with my addresses.

I recently set up a windows 2003 server with apache 2.2.4 (ssl version
from apachelounge) and subversion 1.4.3 (version for ap2.2.x).
Everything as far as subversion itself is concerned, is fine.
I added the APR_ICONV_PATH, so that I get correct german umlauts in the
console.
And I added the /bin folder to my PATH, such that Apache is able to find
the required dlls.

Now something strange happens:
I use trac for my ticket management. As soon as I try to activate trac's
svn capabilities and access the site, trac crashes the whole web server.
And when I start eclipse (with its subversion plugin installed), eclipse
crashes as well.
If I remove the ICONV_PATH and the subversion /bin folder from the path,
eclipse works fine. If I copy the needed dlls into the the apache /bin
folder, trac's subversion integration works as well (again, without
subversion's /bin folder in the PATH).
It seems as if those programs crash as soon as they find a
APR_ICONV_PATH pointing to a subversion iconv folder with versions for
apache 2.2. The /bin folder seems to be somehow involved, too.
With apache 2.0.59 everything worked fine.

I do not know where I should start my search, any suggestions are
greatly appreciated.

Thanks,

Nico