Subversion exception svn update

I was using Tortoise SVN 1.6 and began having problems loading a file
that was 1gig up through the high speed internet provider I have Astound
broadband. I think this is a network issue, because I get the same
message, if I'm uploading a large amount of data (could this be Apache
problem?) I get this message:
Command: Commit
Modified: D:\GCDP_Repository\method-pub\installshield
packaging\0_installshield_projects\OUM_5.5.0_Project\OUM_5.5.0\Oracle_OUM_5.5.0_Install.exe

Sending content: D:\GCDP_Repository\method-pub\installshield
packaging\0_installshield_projects\OUM_5.5.0_Project\OUM_5.5.0\Oracle_OUM_5.5.0_Install.exe

Error: Commit failed (details follow):
Error: PUT of
Error:
'/svn/method-pub/!svn/wrk/3883a3a4-badd-1947-aa1f-0e12d0d7f338/trunk/installshield%20packaging/0_installshield_projects/OUM_5.5.0_Project/OUM_5.5.0/Oracle_OUM_5.5.0_Install.exe':

Error: SSL handshake failed: An existing connection was forcibly closed
by the remote host.
Error: (https://gcdpsource.oracle.com)
Finished!:

I decided to go to SVN 1.7, and therefore encountered the requirement to
do a SVN Updgrade working copy on EVERY ONE OF MY checkout project areas.

So I upgraded a working copy in one of my workspaces and then tried to
do an SVN Update of a folder with a large file in it.

Now when I try to execute the svn cleanup command I get this message
repeatedly.

Any ideas? Thanks much for your help.

Subversion Exception!
---------------------------
Subversion encountered a serious problem.
Please take the time to report this on the Subversion mailing list
(users_at_subversion.apache.org)
with as much information as possible about what
you were trying to do.
But please first search the mailing list archives for the error message
to avoid reporting the same problem repeatedly.
You can find the mailing list archives at
http://subversion.apache.org/mailing-lists.html

Subversion reported the following
(you can copy the content of this dialog
to the clipboard using Ctrl-C):

In file
  'D:\Development\SVN\Releases\TortoiseSVN-1.7.0\ext\subversion\subversion\libsvn_wc\workqueue.c'
  line 672: assertion failed (checksum != NULL)

I guess my other option is to delete the checkout and checkout the files
again... Why didn't anyone say svn was a total re-checkout of all
repositories BEFORE I upgraded!

-- 
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Theresa Merenkov, CSM, PMP | Global Methods Senior Director
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