To fix this, go to Plugins -> Editor in your WordPress Admin interface. Click on “Twitter for WordPress” on the list of plugins on the right of the page. Now, under the line with the following:
define('MAGPIE_CACHE_AGE', 120);
Add the following line:
define('MAGPIE_CACHE_ON', false);
Click on the Update button at the bottom of the page. Your plugin file will need to be writeable in order to make this change. If you can’t write to plugin files directly, download the file using FTP, make the changes and upload it again.
This turns off caching for the fetch_rss function, which appears to be the issue with 2.7. This is not a recommended solution, but it should get you by until an official fix is released.
If you have any questions let me know.
