I had a bit of a problem with a restored computer where the CD drives would not appear in My Computer in Windows XP.
After a little bit of grief, I found that the problem was a simple registry setting: http://www.siliconguide.com/qa/forum/messages/71.shtml
To resolve the issue

Open up the registry editor (Start > Run > regedit and click ‘OK’)
Navigate [...]

As I’m using network manager to control wireless access on my laptop and a desktop computer in my home, I’ve decided that the keyring manager is a nuisance.
I couldn’t bear for it to constantly ask for a password every time that I needed to log on to a wireless network to retrieve the stored password. [...]