I've just launched a site here: http://www.punch-drunk.com
Installed W3 Total Cache, got all the basics going: page cache, minify, DB cache, object cache, browser cache - even setup a CDN with Amazon Cloudfront and uploaded all the various gallery images, attachments, include files, theme files, etc.
Also have Cloudflare setup to further increase speed.
The pages, once they start loading, load extremely quickly, but the issue is a 2-5 second (!) delay often between when you click a link for a page and it loads, where the status bar in the browser just says "Waiting for punch-drunk.com." (Mostly on Chrome OSX and WinXP, tried Safari and FF as well, same results)
That lag time seems to decrease noticeably when I deactivate W3 total cache, but of course the pages themselves load more slowly then.
Any ideas how to cut down this lag time? Thanks!