My netbook's network connection was working perfectly fine, and yet Thunderbird stubbornly refused to go online.
For the weekend, I had been traveling and therefore had put Thunderbird 6.0 into offline mode. Today,
I hooked up the netbook to the network, and asked Thunderbird to check for new email. It responded
by noticing that it was still in offline mode, and asking me I wanted it to go online again. I confirmed,
but nothing happened. According to "File/Offline", Thunderbird now even felt it was in online mode
again, but no new email arrived. I had it check for email again, and once more I was told that
Thunderbird still was in offline mode, and whether I wanted it to go online.
I tried a couple more times - often enough to feel pretty foolish about it. Then I created a new
email message - and was greeted by a message box claiming that an unresponsive script was still
running. I stopped the script (whatever that script may have been doing) - and now I could go online again.
Later I found that the problem is already described elsewhere, for example at
Previous month: Click here