Ars Technica has received confirmation from the horse's mouth that AT&T is not capping data speeds for iPhone 4 users, as recent rumors have suggested. AT&T said that what some users are experiencing - a degradation in upload speeds to as low as 100 Kbps - is the result of a software defect in the Alcatel-Lucent equipment that AT&T uses in some of its cell towers. AT&T noted that the defect should affect only about 2 percent of users, and that Alcatel-Lucent is working on a fix. follow link
Improve Apple Services with AirPort Base Stations
You can make iChat file transfers, iDisk, and Back to My Mac work better by turning on a setting with Apple AirPort base stations released starting in 2003. Launch AirPort Utility, select your base station, click Manual Setup, choose the Internet view, and click the NAT tab. Check the Enable NAT Port Mapping Protocol (NAT-PMP) box, and click Update. NAT-PMP lets your Mac OS X computer give Apple information to connect back into a network that's otherwise unreachable from the rest of the Internet. This speeds updates and makes connections work better for services run by Apple.
- ExtraBITS for 12 July 2010 (11 Jul 10)
AT&T Denies Data Capping