Updated: VMware customers and partners are experiencing disruptions after trying to download an update for the company’s ESX and ESXi 3.5 products. The update is causing a failure when trying to power on a virtual machine and additional problems with VMware’s Vmotion technology.

The problems, which were first reported Aug. 12, appear to have been limited to the Update 2 patch that VMware sent out for both its ESX and ESXi hypervisor products. While the faulty patch has caused problems with virtual machines and Vmotion–the technology that allows for live migration of virtual machines–no other products seemed to have been affected.

The cause behind the disruptions seems to be related to a licensing expiration time issue. In an e-mail sent late Aug. 12 to VMware customers, VMware engineers wrote that the problem is “caused by a build timeout that was mistakenly left enabled for the release build.”

While it’s not clear how many VMware customers were affected by the faulty updates, several Web sites claim that the disruptions were widespread, but VMware was still trying to address the issue. VMware did pull the update from the Web site’s download page to ensure that no other customers or partners downloaded the faulty patch.

Read the rest of this article on eWEEK.com.