Apple has warned MacBook owners to check for stray pieces of plastic left behind during manufacturing if their new Macs run too warm.A vocal minority of new MacBook and MacBook Pro owners have complained that their machines run at very high temperatures, prompting the company to investigate.First fruit of these investigations: The company published a technical note yesterday, in which it warned that some MacBooks “may have left the factory with a thin piece of clear plastic covering the rear vent.”According to Apple, this thin plastic slice is used in the factory to prevent dust from getting into the machine. “If your MacBook has the plastic still over the vent, simply remove and discard it,” advises Apple. The company has also published a second document for notebook owners who think their machines are running too hot, in which it explains that a certain amount of heat is perfectly normal.“The bottom surface and some areas between the keyboard and LCD hinge of your Apple notebook computer can become hot after extended periods of use,” Apple explains, calling this “normal operating behavior. “With processor and bus speeds in portable computers often matching, if not exceeding, those of desktop systems, increased operating temperatures in portable computing products are common throughout the industry,” the company says.Apple advises users to place their portable Macs on a flat, stable surface, but not on their laps or upholstery.“When using your portable computer, place it on a hard surface, such as a desktop or a tray. A hard surface allows air to flow under the computer to dissipate heat. Placing it on a soft surface such as a towel or pillow (or lap) is not recommended because it does not allow air to flow under the computer,” the company warns.Apple also recommends users set their Energy Saver settings to “Better Energy.”-Jonny Evans, Techworld.com (London)Check out our CIO News Alerts and Tech Informer pages for more updated news coverage. Related content brandpost Top 10 reasons to modernize technology now Application modernization is a wise investment for businesses seeking long-term success and a competitive edge in today's fast-paced digital landscape. By Amanda Downs and Alina Zamorskaya Jun 06, 2023 7 mins Digital Transformation feature 5G ready or 5G really? Industry CIOs face hard truths about private 5G Some enterprises are building private 5G networks for their industrial environments, only to find they have to initially settle for 4G service. So what is private 5G ready for, and what can it really do? By Peter Sayer Jun 06, 2023 8 mins CIO Network Appliances Network Switches opinion 5 tips for startup partnership success Corporate venture investments provide IT leaders with new engines for IT innovation, broader networks for emerging opportunities, fuel for in-house transformation, and improved career prospects — if done right. By Isaac Sacolick Jun 06, 2023 8 mins Startups Digital Transformation IT Strategy feature 14 organizations that support LGBTQ+ tech workers Offering networking, mentorship, and career development opportunities, these 14 professional orgs foster community for LGBTQ+ workers in an industry that isn’t always welcoming. By Sarah K. White Jun 06, 2023 9 mins Diversity and Inclusion Podcasts Videos Resources Events SUBSCRIBE TO OUR NEWSLETTER From our editors straight to your inbox Get started by entering your email address below. Please enter a valid email address Subscribe