Might be related to the fact that XP SP1 will also update your IE to 6 SP1 .... I noticed that IE 6 SP1 DELETES two interesting files in the SYSTEM32 folder, JAVA.EXE and JAVAW.EXE. I put this two files back in place. These two are part of the Java 1.4.1 Runtimes required by LW !!