W3 Total Cache Making "Add New Post" Really Slow

[jmrallen]

I installed W3 Total Cache yesterday on my Genesis 2.0 site running the News Pro theme and have noticed an increase in page speed scores. However, the "add new post" function is ridiculously slow now, to the point that it actually timed-out my site and caused it to go offline for 5-10 seconds.

I can navigate the *entire* admin area just fine -- except for "add new post." Literally every time I click the 'add new post' link it hangs for no less than 30 seconds, often longer. Adding the post is fine, but then when I hit 'publish' it hangs for literally minutes.

Has anyone else experienced this, and more important, found a solution? Is it something with database caching or object caching (I'm in a shared environment -- mediatemple's grid-service). Is the solution ditching the plugin entirely and going with another? I'm generally pleased with W3TC's performance other than this horrible add-new-post hiccup. I'm surprised at the problem, considering StudioPress so actively promotes W3TC as a strategic partner for the Genesis framework, which I use.

[jmrallen]

FYI, I just tried to remove an "Inactive widget" from the appearance-widgets area, and upon hitting "delete" it took more than four minutes to respond. So apparently it isn't just the add-new-post function that's taking forever. It appears that navigating through the admin area works fine, but making changes to anything there is taking eons. Any and all advice about how to fix this would be wonderful.

[jmrallen]

If anyone else encounters this, I unchecked the box for "database caching" and it seemed to speed things up in terms of clicking "add new post." Once I hit 'publish' on that post it still takes an inordinately long time to get back to the editing screen, though. Is this why people go with WP Supercache? Or am I still missing something else?

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