If you use the Bookman Old Style font, and your video driver attempts to process a glyph with a negative x, you may receive:
STOP 0x0000001E (0xc0000005, 0xfccc6add, 0x00000001, 0x013b8020)
NOTE: The 4th parameter may vary, but the 2nd is always within Vga.dll.
This may have been fixed in SP6, but it is undocumented. If not, don't use the Bookman Old Style font.