WordPress doesn't update my plugin [svn]

I can’t see what your problem is from the link you’ve given. But if the process of syncing things with the svn is mysterious I can recommend another approach.

I use Aptana Studio to connect to the svn. Here’s a link to the help videos that saved me a tonne of head scratching:

https://www.whypad.com/posts/hosting-a-plugin-on-wordpress-with-aptana-and-subclipse-pt-3/554/

Other than that, WordPress does take a few minutes to sync things on their end, but the Aptana app always confirmed uploads/commits – much less mystery in the whole process now.