Updated 11:08 a.m
(CBS News) Google Talk, the popular chat client also knowns as "Gtalk" or "Gchat," went down Thursday morning.
At 6:40 a.m. ET Thursday morning, the Google Apps Status Dashboard stated: "We're investigating reports of an issue with Google Talk. We will provide more information shortly."
In some cases, the Google Talk users appear offline. In other cases, they are showing up in chat lists, but are unable to communicate through the chat client.
There is no current explanation for the outage, but Google says they are working on a fix for the problem.
"We're aware of a problem with Google Talk, and are doing our best to resolve the issue as soon as possible. We are posting regular updates on our Google Apps dashboard," a spokesperson for Google told CBS News via email.
Users are upset - taking to Twitter to vent frustration and make jokes. Twitter user @jakebeckman tweeted, "I feel like I'm on the lifeboat in Titanic. 'HELLO? IS THERE ANYONE ALIVE OUT THERE?'"
Status update from Google starting at 6:50 a.m. ET stated:
"Our team is continuing to investigate this issue. We will provide an update by 7/26/12 9:50 AM with more information about this problem. Thank you for your patience."
The latest status update from Google was posted at 10:50 a.m. ET, stating:
"Google Talk service has already been restored for some users, and we expect a resolution for all users in the near future. Please note this time frame is an estimate and may change."