Thread:Project:Support desk/CSS cache not clearing in 1.20+

Hey all- I'm trying to develop a custom skin off Vector. Unfortunately, any chances I make to main-ltr.css aren't shown in the wiki, and no matter how many times I purge the page, clear the browser cache, shift-refresh, etc. etc., the changes will. not. show. up. This happens in Firefox, Chrome, and IE 8. I've set  to 10 and even   to 10 (it's a development server so no one's using it) in an attempt to get the 'compiled' CSS to reload... no dice. Same goes for using &debug=true -- Firebug keeps showing the old properties while the screen shows the new ones, and vice versa. (For example, if I change the top property in  from 160px to 300px, it showed up. When I resorted back to 160, it's still showing a 300px push, yet Firebug says they're all set to 160px.) What can I do to fix this? It's driving me crazy!