User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US) AppleWebKit/532.3 (KHTML, like Gecko) Chrome/4.0.223.11 Safari/532.3
Build Identifier: 1.0.1

I have a fairly old computer with a fairly slow hard disk, and the Open With dialog takes a LOT longer to open than necessary (about 10 seconds, more if something else is working too). In order to speed up this dialog I suggest:

- The "other applications" list is collapsed and only loaded when unfolded. This means the dialog only has to load the recommended/default applications for a file type, making the dialog a lot faster.
- Keep the applications list in memory after the dialog loaded once and show that one (while checking for changes in the applist in the background), this makes the list quickly accessible after one load, even though the user might have to wait a bit before that newly installed application appears in the list.

Reproducible: Always

Steps to Reproduce:
1. Right-click on a file and select "Open With Other Application".
Actual Results:  
Window took ~10 seconds to load.

Expected Results:  
Window opens almost instantly