Big problem after database import

[Kurisu]

I've spent days to fix this problem but now I give up. I'm in desperate need for help.

I did a backup of my database via SSH and imorted it.
Normally that should work fine. But in my case it doesn't.
I get this error:

Warning: array_keys() [function.array-keys]: The first argument should be an array in /includes/functions.php (line 3503)

Warning: Invalid argument supplied for foreach() in /includes/functions.php (line 3503)

I am also told that I am banned for unknown reaseon and that the ban will never be lifted.

Both errors can be fixed using tools.php.

But the real problem is this:
All umlauts are replaced by strange chars (like ü instead of ü) and there are absolutely no phrases - as if the phrase table would be empty (which is not the case).

If I import the language file using tools.php the phrases are being displayed again.
But if I post something that contains chars like ö, ä, ß everything is cut of.
testäöü -> test


Apache v2.2.2
PHP 5.1.4
MySQL 5.0.24
Encoding utf8

[Steve Machol]

Unfortunately I have no idea how to fix this but I'll ask the other staff members to take a look at this thread.

[Marco van Herwaarden]

For both the backup-database and the new database:
- What MySQL version?
- What is the default collation for the database?

[Kurisu]

For both the backup-database and the new database:
- What MySQL version?
- What is the default collation for the database?

MySQL 5.0.24

MySQL charset: UTF-8 Unicode
MySQL connection collation:: utf8_unicode_ci
The databases use utf8_general_ci

[Marco van Herwaarden]

Please open a support ticket. Make sure to include details to AdminCP (english please), FTP/SSH and phpMyAdmin if available.