Acrobat Reader 8 has just auto-updated to the 8.1.2. Now, all fonts are fuzzy-eded (as if the Windows 'Smooth edge of screen fonts' were switched off, which it isn't - it is set to Cleartype). Also, under Help the options for Help F1 and Online knowledgebase don't work. Any ideas?
I'm afraid that the only 'solution' I have found is to stop using Acrobat Reader and instead use expert PDF Creator, a superb free programme that creates PDFs from any programme by installing a printer driver, and letting it read all my PDF files for me. Works beautifully.