Comment Re:Upgrade? Win7 and 8 have their own update issue (Score 1) 413
The winsxs folder grows exponentially, and since everything depends on everything else, deleting from that folder causes all kinds of problems.
Sort of no longer true (as of SP1): http://support.microsoft.com/kb/2795190
On my primary Windows 7 computer, it is down to 10.5GB.