My address LUmrXVibufVSyDtEhJQTWT2DzEtN1sUBzA on Block explorer and a few other websites say I have ~100 litecoins in my address. However, my client says I have ~400. I have been mining and saving up for awhile, and know I have 400 (or at least should) on that address. Why are other website saying differently? I am running v0.6.3c, and was going to upgrade today. Was there some sort of fork in the past that removed the 400 I should have right now? I'm confused and was hoping you guys could help me out.

Thanks