I think the toxicity of acetone may be a bit exaggerated. After all, nail polish remover is mostly acetone and millions of women (and maybe men /forums/images/graemlins/blush.gif ) use it every day. I did a quick search for nail polish remover ingredients and found a link with the following info regarding acetone:
Government & Industry Toxicity Category Explanation
UNECE R11: Highly flammable. [UNECE, 2004; EU Directive 67/548/EEC]
UNECE R36: Irritating to eyes. [UNECE, 2004; EU Directive 67/548/EEC]
UNECE R66: Repeated exposure may cause skin dryness or cracking. [UNECE, 2004; EU Directive 67/548/EEC]
UNECE R67: Vapours may cause drowsiness and dizziness. [UNECE, 2004; EU Directive 67/548/EEC]
Obviously you shouldn't drink it or bathe in it, but I don't think I'd worry about a bit of casual contact. To each his own, however, and I certainly wouldn't discourage anyone from using additional precautions ...