From Amigart: "WarpUp 5 doesn't contain any revolutionary changes or features, but we have tried to eliminate as many problems as possible. Additionally we have tried to implement features which were requested by developers working on WarpUp projects. The much-discussed multitasking-lock-problem might have disappeared, but I rely on your feedback to know if this is true. Please also consider, that your problem might not be the same as the problem of other people have similar symptoms. The WarpUp 5 package also contains a recent version of the PowerUp emulation package, which is also considered a beta version, which should be tested as much as possible. Please report problems concerning the PowerUp emulation to its author (Frank Wille)."