No, looks like the regcure program has done damage. There are safer registry cleaners out there. Normally if LW slows down it's due to your drives needing defragging or else, Tip: Purge the Downloads Queue! (click on blue link). Or if over 3,000 shares then remove some.

Errors due to mistakenly uninstalling LW using Add/Remove control panel - what to try now. Read from here onward!