Help!viewvc1.07's problem on suse.

We've installed svn 1.6.6 client, server, and extras via the binaries on suse linux enterprise 10.1 (phython2.4.2, gcc4.1.0,
kernel 2.6.16.46-0.12-smp )and have created a few test repositories. We're able to see the repository list via ViewVC just fine, but when we click on a repository to see its contents, we get the following exception(And other functions are fine) .Any idea why this is happening? I've verified that /opt/CollabNet_Subve​rsion/lib/libserf-0.so.0 exists.
Thanks!
an Exception Has occured
Python Traceback(most recent call last):
File "/opt/CollabNet_Subversion/lib/viewvc/viewvc.py" line 3755, in main request.run_viewvc()
File "/opt/CollabNet_Subversion/lib/viewvc/viewvc.py", line 259, in run_viewvc import vclib.svn
File "/opt/CollabNet_Subversion/lib/svn-phython/svn/__init__.py", line 29, in ? from svn import
fs, repos, core, delta
File "/opt/CollabNet_Subversion/lib/svn-phython/svn/fs.py",line 19,in? from libsvn.fs import*
File "/opt/CollabNet_Subversion/lib/svn-phython/libsvn/fs.py",line 7,in? import_fs
ImportError:/opt/CollabNet_Subversion/lib/libserf-0.so.0: undefined symbol:BIO_set_flags

And than i installed svn 1.5.7, still have the same problem.But on redhat enterprise 5, everything is ok!
Please help!
Thanks in advance!

--
Best regards
Cefu Fu
--
Best regards
Cefu Fu　符策富
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