I've had that happen in the past. Can/will happen if you have gone in and "cleaned" up your internet cookies (or if your anti-virus/internet security software does that automatically). Haven't seen it in the last couple of days though.
Greg

Destiny&RCCL Mariner&RSSC Mariner Carib, Navigator AK, Navigator Canal, PG Tahiti B2B, Voyager Baltic, Mariner AKL-LA, Voyager MC-Dover,
PG PPT-Fiji,Navigator Med B2B2B, Cloud Norway, BCN-DXB Mariner, MIA-BUE Mariner, YVR-TOY Shadow, AKL-PPT Marina