QUOTE(Bread @ Jun 3 2009, 01:29 PM)

Ensure hidden files are enabled in your ftp client.
Alternatively, use
http://www.uuuq.com/fileman.jsp (if you're on another server point replace uuuq.com with the correct server's domain) and delete that way.
Thanks for prompt reply!
For some reasons I couldn't remove it either using file manager of the site. Attributes changing didn't help. Than - again from FTP client - I tried again to remove the folder containing mentioned file and it worked this time... Anyways the problem is solved.