SLTC 2010 will be held in the Building B at Campus Valla, Linköping University. The main conference hall is called Visionen and located in the middle of the building with the closest entry being no. 27.
If you arrive by train, buses no 12 and 20 can take you to the university. NOTE that tickets cannot be purchased on the buses but have to be purchased in advance, either in the "Quickomats" or by SMS. For more information (in Swedish), see Östgötatrafikens informationssidor.
Maps and directions can be found here: