Goodness, in 10 years of using Windows Mobile and Pocket PCs, I haven't seen that one! That is unless I've installed 3rd party software that also displays in the menu bar and crowds out the standard icons. Assuming you haven't installed any 3rd party utilities that display in the menu bar, have you tried a soft reset to reboot the Glisten?
-------------------- Lisa Gade Editor in Chief, MobileTechReview