The international launch of the Apple Inc. (Nasdaq: AAPL) iPad has propelled sales of the tablet over the 2 million mark in just two months. (See iPad Sales Top 2 Million.)

Apple launched the tablet in nine countries around the world on Friday. The Cupertino, Calif.-based company first introduced the iPad in the US with a WiFi-only version on April 3, and a dual-mode version with 3G on board followed on April 30.

Apple announced that it had sold 1 million iPads with the launch of the 3G version in the US. The company had to initially delay the international launch of the iPad because its suppliers could not meet early demand.

The big question that still hangs over the iPad is how it will affect performance on 3G networks. The gadget is expected to consume data at the rate of a netbook but is selling like a smartphone. The iPad will get multitasking in the fall, which could further increase bandwidth consumption (See iPhone: Could Multitasking Increase 3G Woes?)

Application developers may not be helping the issue. The Interfacelab says that the Wired app for the iPad is a 500MB download. This download alone would bust through AT&T Inc. (NYSE: T)'s cheaper $14.99 plan that allows users to download 250MB a month.

In total, developers have created more than 5,000 iPad-specific apps, in addition to the thousands of iPhone apps that can also run on the iPad.

See more of our iPad coverage below:

— Dan Jones, Site Editor, Light Reading Mobile