I-beam (text) cursor doesn't show on white backgrounds

The I-beam cursor (for text editing) doesn't invert on white backgrounds, which are common in all apps. Hence, it is invisible. This occurs in the following apps:

*MS Office 2004 (Word)*
FINDER (when you edit the name of a file or folder)
iTunes 7 (in any field you edit)
Runtime Révolution 2.9 (an IDE dev app)
*Adobe Illustrator CS3 (using the Text Tool)*
*Quark XPress (using the Text Tool) Version 6.51 up to 8.1*
BBEdid (v 8.x)
Google Earth
Toast 8
Vuescan
Firefox (2.0.0.13)

The problem occured already under 10.5 Leopard, and is still a nuisance (read: not fixed) under 10.6 Snow Leopard

Anybody have a solution of how to let this cursor invert again as should be? Or hack some system file to make is permanently black?