bjornrojb on "Posts from multiple wordpress installations showing up within one?"

Hi, I exported a mysql db from my hosting provider and imported it into my local computer's mysql and then installed wordpress, set it up to access the imported database but in wp-config.php set the correct table prefix for only one of the wordpress installations.
Now when I log in to the local wordpress on localhost, I see under the posts administration page that all of the posts from all of the different installations are accessable, despite their having different prefixes for their tables. This doesn't happen on my hosting provider's server! How can I import an sql file such that posts will only show up if the table prefix is the same as defined in config.php?