We are having an ongoing issue with our office network. All of the chat messengers, (ex. msn, skype, gtalk) go down on a constant basis. The internet itself seems fine, you can continue to browse and email still comes in it appears. We can't seem to find the cause of this problem. The firewall is Ubuntu's Webmin.
Might be worthwhile to note that before this issue popped up there was an issue with the internet (browsing and mail) going down periodically while all the messengers stayed online.
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