LG Lotus

I recently purchased a 8GB transend micro SDHC card for my lotus. I loaded about 100 songs on it and my phone took about 10 minutes to load the first song. I took the same card and loaded about 6GB more of music on it. When I opened up the music player, it began to load and the power reset. Has anyone had this problem before. The phone is supposed to handle up to 12GB but it seems as if it cannot read too much information at one time.