I am getting this error quite frequent. This is the 4th time I've installed 7 beta. I've done 1 install with totally wiping out my XP installation. It worked fine then. I started with a dual boot. This is when it happened all the time after I got a few programs installed in 7. So I did a clean install over my XP partition. I installed quite a bit. Worked great. But I really wanted my XP also, so I restored my backup of XP and reinstalled a dual boot. I have reinstalled 7 twice since then. And each time, after I get a few programs installed, it will say a certain application has failed and that I need to run chkdsk. No certain application does it. So anyway, I reboot and run the chkdsk, it finds a bunch of stuff it deletes. Windows restarts and another application pops up the error. I reboot again, run chkdsk, deletes a bunch. I do this about 3 times and this is where I am now. My firefox won't respond. My steam won't run, it says "Unable to write to current steam folder. Move steam to a folder where you have write privelges." It's like each time I run the chkdsk, it gets worse. If this matters, I use Acronis to partition and to backup images. I have 2 drives, 6 total partitions. Disk 0 has XP, 7 and a media (data) partition. Disk 1 has all backup partitions. My XP is C: My 7 install is in G: Maybe that has something to do with it. All my programs install in G: when I'm logged into 7. So it's not like it's trying to install programs into the XP partition when I'm logged into 7. SO...any ideas would be great. I LOVE 7!! Im an XP user right to 7. So I never did experience Vista.