I too am having space problems with win 7, i set up the C: partition with 30gig because msoft said win 7 will need 20 gig.
There has been no data saved to C: except for win 7 updates. When i first installed win 7 it grabbed 20 gig and another 5 after i had registered the OS, since then it has consumed a total of 27.5 gig. To put it another way last night when powered down there was 2.71 gig of space left on C:, this morning when i powered up there was 2.38 gig! where the hell has 300mb gone over night
I have gone through the usual tips to save space bit it only recovers so much, i have not got a swap file set on C: because when i installed win 7 it took so much space that there was not enough left for the swap file, ( i have 8 gig of ram ) win 7 then grabbed all of my programs partition 10 gig which i then swithched off and set back up on the data partition 185 gig - win 7 grabbed 10 gig.
The pc runs fine but the blue line that shows how much space is left has turned red, i had this problem with XP and used partition magic 5 times to resize C: but it causes some problems itself.
I have read your thread suggesting how to switch of the hiberfile but when i try to do this command prompt says that it is not an internal or external command? I am not profficient with command prompt and think i may be making a mistake somewhere.
Any advice regarding this would be welcome.