I'm trying to clear some space on my hard drive, and I have almost 20 GB of cache in my library folder under Adobe CS4. That seems like a lot to me. I have been using Photoshop for a while on my mac, and didn't realize this folder was building up. Why is it building up? And can I delete it? Or will I have problems with CS4 once deleted?
It builds up as Adobe caches data you've loaded when using Adobe applications. Cache files can be deleted. If Adobe needs to cache new data it will create a new cache file. You might explore Adobe applications' preferences to see if there is an option to limit the size of the cache.