Microsoft is set to release a major update to its Windows Live OneCare security suite next week. That's according to Amazon, which has already begun accepting orders for OneCare 2.0.

Microsoft has been beta testing OneCare 2.0 since July, billing it as a better way for home users to operate their PCs and as "a foundation to better address the needs of small businesses," according to a Microsoft blog.

The software, which can be run on up to three PCs, has new tools for backing up, monitoring and managing home networks. It also has new features to speed up the performance of systems that use the software. OneCare is sold on a subscription basis, so these prices would cover a one-year subscription.

Since it was introduced last year, the software hasn't exactly been a runaway hit.

Just last week OneCare came under fire for changing users' automatic update settings without proper notification, and earlier this year the software ranked last in a test of 15 anti-virus products by AV-Comparatives, an Austrian antivirus testing project.

But Microsoft has improved its malware detection rate, according to Vinny Gullotto, general manager of the company's Malware Protection Center.

Between September 2006 and September this year, Microsoft has bettered its malware detection rate by about 20 points, Gullotto said. Now, Microsoft's detection rate is usually between 91 percent to 95 percent, depending on the testing plan, he said.