Software :: Downloaded File Disappears / Unable To Find Downloaded Files

About a month ago, a friend who had just purchased his first Mac emailed me and asked why his Dock DownLoad file disappeared. I had no idea why. He still hasn't been able to reestablish it.

Yesterday, I downloaded something and my Dock DownLoad file vanished. I have tried rebooting, using (useless) Help, Spotlight, Search, and several other things. NO JOY. NO DownLoad file.

1. Does anyone know where to find DownLoad or how to bring it back?

I have experienced several idiosyncrasies with Snow Leopard, but when I call Apple support, they are very nice, but haven't a clue as to why it's happening.

2. Another problem is that the Highlight gets anchored on something in Mail, Word, and some other Apps. When I click somewhere else, the whole area between the "anchor" and what I click on is lit up. Apple doesn't know what causes it. I have to go through multiple machinations to shake it loose. I don't know what it is that causes it or specifically how to "shake it loose". Neither does Apple.

3. When typing in Word or an editor, there are times when the type changes to UpperCase and won;t let go.

Another problem is that, at times, when I click on a file, it fills the screen. Apple is aware of this problem and is trying to find an answer. Nothing, to date.

Apple support can't tell me why the MacMail Inbox spinner disappeared or how to get it back.

There are times when I can't access the hidden Dock. After rebooting and trying other things, the Dock finally shows up but any additions that I have put on the Dock are no longer there.

When I put a DVD in the slot, for the first few seconds, it grinds but does smooth out.

I thought that SL was supposed to get rid of the "foibles". "What happened on the way to the Forum"?

Is anyone finding other SL idiosyncrasies? What are they?

If anyone can help with items 1., 2, and/or 3. I'd be grateful.

BTW, Apple says that items 2 and 3 MAY be caused by the wireless Magic Mouse and/or the wireless keyboard; however, when I use alternates, it still happens.