You got the property name wrong. It's not ignore
but svn:ignore
. That is why the files are not ignored and your svn plugin in Eclipse wants to add them, because you set the list of files in the wrong property so it is not taken into account.
Since you seem comfortable on the command line, here are the commands to fix this:
svn pget ignore . > ignore.txt # backup the content of ignore
svn pset svn:ignore . -F ignore.txt # set svn:ignore from the backup
svn pdel ignore # delete the ignore property
Or as the other answer points out you could also use your Eclipse plugin to set ignore patterns.