The number of mobile broadband subscribers using 3G HSPA has increased by 850% worldwide in the past year, according to the GSM Association. But carriers are also running the risk of becoming a victim of their own success, according to some analysts.

HSPA (High-Speed Packet Access) is an advanced form of 3G deployed by cellular operators that use GSM (Global System for Mobile Communications) technology. Worldwide, GSM is the most widely-used cellular technology; it is used by AT&T Inc. and T-Mobile in the U.S. HSPA currently offers speeds ranging from 1.8 Mbps to 7.2 Mbps.

There are now more than 32 million HSPA connections worldwide, compared with 3 million a year ago, according to the GSM Associaton.

Read the full report in ‘Computer World’ here.