How to stop ongoing download from Android Market

I was trying to download an application from Android Market on Samsung Galaxy 5 and got stuck up. I went again to Android Market and selected the application and the download for second file of that application started and none was getting completed.

I searched on Google and was advised to force close the Download Manager from Settings/Applications/Manage_Applications but could not find the Download Manager.

While in Manage Applications I pressed the left key and selected Filter options "All". Then I could see the Download Manager. I forced closed the application and the download stopped.

Facebook, Tweeter Feeds on Ubuntu Desktop

Today I installed Ubuntu Unity gwibber lens:
sudo add-apt-repository ppa:gwibber-team/ppa
sudo apt-get update
sudo apt-get install unity-lens-gwibber

Then I found that Gwibber was not getting facebook and tweeter feeds. After I restarted Gwibber tweeter feeds worked but facebook did not:
killall gwibber-service
gwibber-service -do

Then I searched to get the solution for facebook feeds and found this page. I did what was told i.e. to modify the following file:
gksu gedit /usr/share/gwibber/plugins/facebook/__init__.py

Now I can get facebook and tweeter feeds on my desktop:

Extract winmail.dat on Ubuntu.

Today I received an email which mentioned an attachment but the attachment was winmail.dat file. After searching on the net I came to know about tnef utility. I installed it with command:
sudo apt-get install tnef

I downloaded the attachment on desktop and extracted it as follows:
cd Desktop
tnef winmail.dat

I found the Excel file attached by the sender on my desktop.