Can't run 2.10 after install. Couldn't connect DB

[dreel]

Hello. I just have had an unsuccessful try to run Contao 2.10 after clean install.
The error is

Fatal error: Uncaught exception Exception with message Could not connect to database (Access denied for user ' dreel_site1'@'localhost' (using password: YES)) thrown in /home/d/dreel/sites/site1/public_html/cms/system/libraries/Database.php on line 78

#0 /home/d/dreel/sites/site1public_html/cms/system/libraries/Database.php(136): Database->__construct()
#1 [internal function]: Database::getInstance()
#2 /home/d/dreel/sites/site1public_html/cms/system/libraries/System.php(147): call_user_func(Array)
#3 /home/d/dreel/sites/site1public_html/cms/system/modules/backend/Backend.php(49): System->import('Database')
#4 /home/d/dreel/sites/site1public_html/cms/contao/install.php(63): Backend->__construct()
#5 /home/d/dreel/sites/site1public_html/cms/contao/install.php(910): InstallTool->__construct()
#6 {main}

I have checked 2.9.5 on the same hosting and it works normally.

Server config:

Linux   2.6	
Apache  1.3.41	
MySQL   5.0	
PHP     5.2.12

Php config here

[Ruud]

Is that a white space in front of the first character of the user name? If so, remove the space in front of your user name.

' dreel_site1'@'localhost'

Remove the space in front of the d of dreel_site1