CFLs heat up far less than incandescents and especially, halogens.

There has been talk here in Aus in the electric/electronic community about the excessively poor performance of 'Chinese made' CFLs - this seem to be related to the use of substandard components - especially the High Voltage capacitors. Stories have been told of enthusiasts replacing the capacitors, and reviving the dead CFLs for several hundred hours extra life.

This is not normally economical - the cost of a qualified person to do the work exceeds the cost of a new unit - and you need to be capable of working safely on the HV circuits, and the units are not designed for easy opening and maintenance. Also comments have been made about the substandard design - inadequate gaps for the high voltage areas on the circuit boards, etc.

Moral - buy the non-Chinese ones - they do cost more, but they last longer - this may change as the manufacturers improve.