Thank you Till,
I've done what you wrote.
Also as I have read in http://howtoforge.com/forums/showthread.php?t=6414
, I stoped all daemons except the ssh to avoid virtual memory error.
ISPconfig instalation runs well.
But now sites are not running anymore.
I enter ISPconfig control panel.
It seems in some way site are here but with problems:
In "ISPmanager" I select "sites" and then "mysite.com" in the new window titled "ISP Site/basis", Server and Hostname are ok but Domain is blank !!!!
I tried to fill it newly, this is the error message:
This website already has 1 user(s). You cannot decrease the number of users.
This website already has 1 domain(s). You cannot decrease the number of domains.
This website already has 0 database(s). You cannot decrease the number of databases.
error_web_no_list_decrease_10error_web_no_list_dec rease_2This website already has 0 database(s). You cannot decrease the number of databases.
Invalid domain name: ""
I cannot enter "user&email" I am only allowed to see the "basis" window. Whatever I do error message is shown.
Thanks if you have any suggestion.