AndStatus v.22.4 "Timeline loading and navigation improvements" is released and already available at https://play.google.com/store/apps/details?id=org.andstatus.app
Several bugs are fixed thanks to Beta testers, some language files updated recently by our translators...
Please publish your reviews at Google Play, if you like what we achieved :-)

Changes since v.21:
1. Maximum number of messages, shown in a Timeline at a time, is restricted to several hundreds. This change should prevent performance degradation for users who receive thousands of new messages daily.
Now AndStatus loads not more than 100 messages (a "page") at a time, and it keeps in its memory not more than 5 pages at a time. When a User scrolls in any direction and new pages are loaded, farther pages are discarded.
2. Added "Go to the top" button to the Timeline Navigation drawer. It allows to see the most recent messages immediately without long scrolling.
3. Added "Refresh" button to the Timeline Navigation drawer. It reloads currently visible page, including avatars and attachments, from a local database.
Existing "Reload" button (in an Action Bar) renamed to "Sync with Internet" in order to clearly distinguish Refresh, which doesn't use Internet connection, from Syncing.
4. Added "Refresh timeline automatically" option to Settings->Timeline. Turning this setting off may give a noticeable performance increase for users, who have many new messages in their timelines and frequent updates. This setting allows to have "Syncing while using AndStatus" enabled and don't wait too often for a timeline refresh.
5. Added "Default timeline" option to Settings->Timeline. This timeline is shown, when a Launcher opens AndStatus; or when a User clicks on AndStatus widget, and there are no new messages.
6. Existing "Hide messages based on keywords" option extended and now it's "Hide messages based on keywords or exact phrases". Messages, which contain defined keywords or exact phrases, are hidden from all timelines. Notifications for hidden messages are not shown.

More details and links at http://andstatus.org/changelog.html