Your site is corrupted and probably still has the vulnerability which got used, and maybe even an installed backdoor...
See this:
docs.joomla.org/Category/Security_Checklist
(replace the / between Category and Securty_Checklist with a : )
You need to give special attention to chapter 6: site recovery.
Getting hacked means LOTS of work to cleanup unfortunately, not just replacing the modified file.
Wishing you a as not-painfull as possible recovery.
Post edited by: beat, at: 2010/02/19 15:18
Post edited by: beat, at: 2010/02/19 15:19
Post edited by: beat, at: 2010/02/19 15:19
Post edited by: beat, at: 2010/02/19 15:20