I haven't heard of that specific issue with CSS optimization. It isn't mentioned in the page for the YUI CSS compressor, which removes white space "not required for the CSS to work":

Please reply back if you can document the line length issue.

Joe Ryan
Digital Library Initiatives
NCSU Libraries 
>>> Joel Marchesoni <[log in to unmask]> 01/14/11 11:28 AM >>> 
Hey Everyone,

I'm working on optimizing our CSS files and can't find anything about this on the web. I know that some browsers/systems have issues with really long lines in files and wanted to get some opinions about removing all line breaks from a CSS file to conserve space. I've seen some optimizers that give the option NOT to remove them, but don't explain why.


Joel Marchesoni
Tech Support Analyst
Hunter Library, Western Carolina University
~Please consider the environment before printing this email~