One user reported having 'numerous people unable to connect for longer than a minute before and after 10.10.1' even with business-grade routers and access points, while others are less exact. MacNN notes that an informal poll showed that only four out of 15 users (about 27 percent) with Wi-Fi issues before the patch are still experiencing problems.
While yesterday's Mac OS X 10.10.1 Yosemite update brought relief to a number of users who were having Wi-Fi issues, MacNN reports that the Apple support threads are still buzzing with discussions of continued disconnects and slow connection speeds.