What is it?
Systweak Advanced System Optimizer is registry cleaner utility whose purported purpose is to remove redundant items from the Windows registry. Systweak Advanced System Optimizer automates the process of looking for invalid entries, missing file references or broken links within the registry and resolving or removing them. The necessity and usefulness of registry cleaners is a controversial topic, with experts in disagreement over their benefits.
Description of aso3sys.dll from Systweak (www.systweak.com)
“Advanced System Optimizer, a multi-functional system performance and optimization suite for Windows. This collection of tools lets you supercharge your PC's performance, enhance its security, tweak and optimize its settings, and customize and personalize your screens. Registry Cleaner makes your system more stable by cleaning out the bad Registry entries that build up each time you install and uninstall software. The program's Registry Optimizer defragments and rebuilds your Registry, making your entire system run more smoothly and quickly. The program includes powerful tools to clean and optimize your hard drives. The System Cleaner removes clutter and unnecessary files from your PC, allowing it to run more quickly.”