Check the results from the poll: http://people.apache.org/~ryan/solr-logo-results.html
The obvious winner is: https://issues.apache.org/jira/secure/attachment/12394282/solr2_maho_impression.pngBut since things are never simple.... given the similarity of this logo to solaris logo:
http://toastytech.com/guis/sol10logo.pngSO... we will check with the Apache PRC for guidance before making any final decisions. With their feedback, we *may* pick one of the 'runner up' logos.
Stay tuned! ryan