ctr-alt-f1 about the same time it's throwing the kde errors at you."ctrl-alt-F1" be applied? Did get to the cursor, and typed in "apt-get"... but it wouldn't recognise the command. Serious newbie stuff... :$
When you say "cursor" what does it look like?
Along the lines of...
08:35 tjpick:~$
Which is a normal prompt (well I've customised mine but the $ means you have a prompt and it's waiting for input)
or like:
Welcome to Linux 2.4.27 (tty2)
jessica login:
which means it is waiting for you to log in...
