Write errors are often an indication of a failing harddisk especially if they are repeated and from multiple programs.
As a priority make sure all your data and settings(ID's passwords etc)are backed up. If it does go for a Burton it can be sudden and you won't get another chance to save anything elsewhere. Professional data recovery is expensive.
Scandisk may be able to fix the errors. Failing that I would get a new disk and either reinstall the OS and restore the data or use an image copying program to copy them.