im a relative linux n00b, ive tried a few distros and like knoppix because its debian based and rather up-to-date

but ive got a few problems im not sure how to fix; most of them are minor i think but definitely annoying

first, i cant browse /mnt at all, anything i browse it with locks up. looking into hda7 for example from the desktop causes a problem, but trying to look diretly into /mnt things freeze and i have to reboot (unless someone can tell me how to kill X and whatever else while starting at it

second: apt-get update gives me a problem: i get *alot* of connection errors; where can i get a good, uptodate sources.list to use?

third: xine gives me a nav packet error when playing dvds; i think i found a solution to that in the forums...but i need apt-get to update properly to get it working :/

fpurth: how do i add resolutions for a monitor? i use a 17" crt but want a higher res than 1024x768 i forget the next one up 1152x something i think) ?

i think thats it for now, i had a couple other things i wanted to ask about (though A-ive forgotten them right now, and B-they needed apt-get to work properly anyway)

all help appreciated, sorry if some of this has been answered before