I check my start up applications, disable them, but login take a long time and System Load is very high (about 9).
this only happens on default user account, and I have this problem since 10.10 upgrading.
what should be wrong? :-/
edit:
I made an sh file and set it to run at startup.
I pasted them in pastebin.com, dmesg output, top output
Have you checked
dmesg
output too? When system load average does not match the number of running processes (7 vs 2 in your example), that would indicate that something is waiting on disk I/O. Usually this is network related for network filesystems.