For the crash problem, use this FAQ to track down what's causing the crash:
[Crash, exit or high CPU when viewing certain directories)
If you find anything, or get stuck, start a new thread with the details and we'll help.
If you still need answers to any of the other questions start threads for each of them like Tanis says. If lots of questions are in a single post it's hard to keep track of which have been answered and which haven't, and hard for other people to search the forums for answers to their questions. When most questions get added to the same thread and all the replies and thoughts are jumbled up it's very difficult to follow for everyone.