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I've got the triangle with exclamation sign inside in system tray, description is the following :

The update information is outdated. This may be caused by network problems or by a repository that is no longer available. Please update manually by clicking on this icon and then selecting 'Check for updates' and check if some of the listed repositories fail.

triangle in systray

update manager window

'Check' updates doesn't help - it shows no updates everytime. It would be greatful if somebody could help me to solve it

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Please add to your question the output of sudo apt-get update && sudo apt-get upgrade - Also add the output of cat /etc/apt/sources.list – fossfreedom Aug 29 '11 at 20:58
sorry for stupid question :) Mentioned outputs are quite long, what is the better way how to add it into a question ? Just copy/paste or somehow else ? – Justas Aug 30 '11 at 21:27
Yes - just copy and paste into the question. Highlight the block of text and click the < $ > so that the text appears in a scrolling list. – fossfreedom Aug 30 '11 at 21:45
up vote 1 down vote accepted

You can re-install wine as it looks like it is the issue.
Run this at terminal: (note that this can remove your wine configuration, if you don't like this, change purge for remove):

sudo apt-get purge wine && sudo apt-get update && sudo apt-get upgrade && sudo apt-get install && sudo apt-get install wine

I had the same issue once. Check your sources: open a terminal and paste gksu software-properties-gtk. If you are using a server from Brasil, try another server, maybe from USA.

If you have some ppa, try to disable them at "Others Softwares" tab.

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choosing another server and disabling of ppa doesn't help – Justas Aug 30 '11 at 21:42
the update Managed is scheduled for daily checking – Justas Aug 31 '11 at 6:56
Have you checked the check box of wine showed in the picture and updated ? – desgua Aug 31 '11 at 11:10
No, I can't do that, it's not available – Justas Aug 31 '11 at 14:14
A had removed(uninstalled) Wine at all and so far it has solved an issue. Now the Update Manager is "up to date". Actually I didn't used Wine before - I had installed it just for experiment. So, I wasn't too sad after removing :) Thanks, your suggestion was helpful – Justas Sep 1 '11 at 13:12

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