A saved game will be deleted after the game is over and it is no longer possible to quit using ESCAPE when the 'Game Over' message is displayed (this allowed restarting with one life over and over again). Further on, the number of bricks required to warp to the next level is computed against the initial number of bricks of a level. Previously it was computed against the current number of bricks, thus when you lost a ball, you had to clear the required percentage again.
The test server 'petersdtp.net' is up and running again. It now provides some bots to test play, in case that you are the only one online. Since this release, these bots have been improved and their usage is documented in the network help.