Google spreadsheet has alot of bugs.

I have been using google docs for a while now. I like the look and feel, but when it comes to funtionality it lives alot wanting.

For example, i can't auto-increment the value of a cell when i drag the mouse down a cell. The formulas i write in the cells get corrupted from time to time, giving undesireable results. It's not easy to work with when dealing with large volumes of data.