When i run sudo aptitude in xterm it's hang on help and Enter or q keys don't work.

1) Which version of Debian are you using?
2) Does the same problem occur if you run just "aptitude" instead of "sudo aptitude"?
3) Have you tried to use aptitude in some other terminal than xterm?
4) What's the content of your /etc/apt/sources.list ?
5) What's the output if you type "sudo apt-get update" in xterm?
6) What's the output if you type "sudo aptitude update" in xterm?

1) Sarge
2) Yes, i have same problem
3) In aterm works without problems
4) deb ftp://ftp.de.debian.org/debian-security testing/updates main contrib
deb ftp://ftp.de.debian.org/debian testing main contrib non-free
deb ftp://ftp.de.debian.org/debian-non-US testing non-US/main non-US/contrib non-US/non-free
5) Normal update list of packages
6) Normal update list of packages

If i run sudo aptitude and do not press any key it's normal. When i press down key it's hang on help.

Well, if the problem only appears in xterm, then it's probably not really an aptitude problem but, instead, an xterm problem. Anyway, your APT settings appear to be OK. I also run aptitude mostly from aterm (or, actually, from wterm that is practically the same thing) and sometimes from the system console (by exiting the X session) and aptitude has given me no problems.

When I installed Debian, I chose the x-window-system-core package that doesn't even include xterm. Aterm is faster than xterm and I personally like aterm (or wterm) much better.

I dont want to use aterm or wterm

We all have our own preferences and variety is one of the great attractions in GNU/Linux.

You might want to report this as a bug against the xterm package. If you haven't reported bugs before, beware that Debian's bugreport pages are read by spammers. I usually create bug reports with the handy reportbug tool (you can just type reportbug in xterm ), and save the created report instead of sending it, then create a temporary account in Google's Gmail, and post the bug report from there.

There's also a GUI frontend to reportbug but it's too buggy to be usable.