ATLast! PROACTIVELY prevents system crashes and errors in DOS, Windows 95 and Windows 98 versions that result in the form of repeatable and non repeatable hangs, system crashes, General Exception Violations, General Protection errors, Illegal operations, Application faults and memory errors. Look for ATLast!'s HEAP recovery system which allows for more Windows programs to run and operate concurrently without failure and also address PCMCIA problems is DOS modes, and automatically re-optimize the system when changes are detected.