Instruct: Classify a review into positive or negative sentiment.
Query: Zero Stars

I frequently had a problem with the installation and software (it would often crash), but I could usually complete a scan. I made a total of less than 50 scans over three months before the Visioneer 8820 started producing a multi-colored grainy background in color scans and a grey grainy background in black and white scans. Customer support was little help. Over an hour on hold on a toll-call, followed by rounds of worthless email exchanges, and finally a 45-minute on-hold and 90 minute troubleshooting call with their technical "support" guy. He gave in and let me exchange the scanner for a new one.The new scanner arrived and lasted about 25 scans before it started doing the same thing. Don't waste your money on a Visionneer.