Mac 10.5, Firefox 16 if that makes any difference. When I download my cloud as SVG it doesn't render properly when opened in Illustrator CS5. No problems with EPS. Sorry, can't test on another browser. I tried Chrome, but the clouds won't load at all.

EDIT - never mind, I see from forum that Tagul SVG doesn't play well with Illustrator and that I should stick with eps.