could someone please post a directory of your /usr/bin for a 3G? I had installed a file there that I wanted to delete, so I launched mobilefinder which was being slow. I ended up deleting some other file by complete accident, but have no idea what file it was. everything seems to be working correctly, but i'm sure it's because I haven't run into a deleted file yet.
It depends, but most of the files there come with the jailbreak. Do you have Cydia? It brings with it a lot of files, not all of them critical for your system.
Windows tool to edit .plist, .strings and .nib files: pledit.
Or use a website that will convert the binary form to a readable format.
On iPhone you can convert those files in a terminal with plutil (installed with Erica Utilities from Cydia), or edit them with iFile (from Cydia).