Typically it means you are running Cydia for the first time. Not to worry, it's normal.
What does this mean? I'm so mad.
Yup, thx all good
What does this mean? I'm so mad.
Overreact much? LOL
----------
I'm SHOCKED
Overreact much? LOL
----------
I'm SHOCKED you were able to login, post a complaint about the "Preparing File System" in the 30-90 seconds it was on your iPhone\iPad. Logic would tell me to at least give it a couple minutes, but you must have seen it and mad-dashed to post here haha. Calm down.