MIne occurred when i installed the slideshow module to the built in gallery function.. maybe this sheds some light oin it.. im not too good at php writing but i might open the files and read them to see if i can find any command that causes the deactivation of the all in one seo…
mods and plugins are great but one thing i can advize is that if you install a load of plugins.. NBEVER update your wordpress version again as oyu run some serious risk of causing a mountain of unfindable issues… i have updated two websites and lost 2 years of forum posts etc because it destroyed the database.