Having laggy speed issues? Boy I was. Just closing KStars would take 20 seconds or more. (can't wait for my 4GB Raspberry to arrive)

On a whim, I tried a new SD card. SanDisk 64GB Ultra microSDXC UHS-I Memory Card with Adapter - 100MB/s, C10, U1, Full HD, A1, Micro SD Card - SDSQUAR-064G-GN6MA

Only $12 on Amazon. I had 2 of them for my Canon Camera and was saving my images there, thinking it would be quicker and was having space issues with my 32GB chips.

Much better response times and have the added benefit of 32GB more space. More than enough for a night's images.