Update on embedded taking space

[xbipin]

im using pfsense 1.2.1 on alix board and the problem is when there is an auto update, it downloads the update and installs it but then after restart it should clear off the update file or the temp files etc from the CF card but what happens is that it keeps storing it to the card and that way if there r updates and i do it twice then the complete space on the CF is used up as it doesnt clear off temp files or the downlaoded update image and that way in no time the CF card free space drops to zero and the side effect of this is that the wbe gui works but the consol display goes down completely and the console wont display anything after it reboots, just shows the ram check etc and the complete pfsense boot is down