Spaces in terms cause issues with contextual filters

Issue Summary

I have multiple contextual filters in my view. I'm using the Content: Has Taxonomy Term ID filter. I check both the multiple values and allow multiple filter values to work together, on each of my filter configs. I can get the following URL to work and display the correct view content:

/gallery/convention/2011/ines%20boehnert

However if I introduce multiple terms into the URL, for example this one, it shows a page not found:

/gallery/origami%20by%20children/2011/tony%20cheng

But if I edit the term and place underscores in place of the spaces, then it loads correctly via this URL:

/gallery/origami_by_children/2011/tony_cheng

Is there a way to get multiple filters to work in a URL if multiple terms in the URL have spaces? This way I don't have to tweak the term to have underscores.

Thoughts/suggestions?

Thanks!

-Trevor