USB Device Disconnect automatically

This was a major problem if you are using internet through a USB device. Suppose of a big download/upload breaks for this reason, especially from rapidshare like sites, where Download resume is not supported.

There are two reasons for this. The power scheme of the computer stops USB device after a specific time interval. Or it may occur due to defective drivers. Here is the solution that worked for me.

Disconnect the device and go to device manager. (Right click on “My Computer” and click Manage. From the left panel of management console, choose device manager.)
Expand USB controller (generally at bottom) and change power scheme of each ports. To do it, double click on each port, go to power management tab and uncheck the box
“Allow windows to turn off the device to save power.”

After this, connect your device again and test if it is disconnecting or not. If it is still disconnecting then follow the next step.
Go to the device manager again without disconnecting the device. The device should be listed under USB. Right click on the device and choose Uninstall.

After uninstall completes, disconnect the device, reboot computer and reconnect it again. The computer will load the drivers automatically.

My USB connection with mobile phone was disconnecting automatically. I solved the problem this way.

Arrange folders by size

In windows, we can not directly see the size of a folder. We have to move the mouse over it, or go to properties. But I encountered a situation, where I had to find and compare the size of some folders. In short, I need to arrange forlder accoring to their size. But there was no built in support for it.

After some searching, I got a very good solution in net. That is "FolderSize.exe" It is a simple utility, that calculates the size of all folders I see in explorer.

Download FolderSize (Win 2000/XP)
http://sourceforge.net/projects/foldersize/
Installation 
Just like any other programm, run the installer.

Use
After installation, it is accessible via windows explorer detail view. (Where you see the size, date etc of the files. Right click on the header labels, (ie on 'size') and a list of available fields will pop up. Enable "Folder Size" from the list. You will get the size of all folders and files also. Now you may turn off the filesize column because the filesize is listed under foldersize column.



Stopping FolderSize
You may stop the service without uninstalling it and may start again when required. Go to control pannel and there is an entry for FolderSize. Double clicking on it will open a box where you can stop it.


Uninstalling
Like any other software, it can be uninstalled via control pannel's Add Remove Program.