If you are indeed 32-bit: Open the AVG interface. On the Toolbar select Tools>Advanced Settings. In the appearing window on the left side click on the plus in front of Update. Click on Manage. On the appearing right panel select the lower bar Revert Virus Database to Previous Version. If all goes well and the problem was only a corrupt dat file this could resolve your concern. However, if the concern is a by-product of the recent version upgrade you will have to remove AVG entirely and re-install. Be sure to use the removal tool. If you had no problems until recently I wouldn't go back to v9. The prior version before the recent upgrade, 10.0.1191, should be just fine. Da Here is a link that might be useful: AVG 10.0.1191

You might need to delete the contents of the folder before deleting the folder itself, one of those strange quirks of computers. If that fails start the confuser in Safe mode by tapping the F8 button on startup and do your thing. If you are at all concerned about editing your registry once the folder has gone you could use Ccleaner, it is a safe and very effective tool for removing all manner of odd files and fragments left on the computer over time. I run it with the default settings.

When you get home, Jan, plug the flash drive into a USB outlet on your computer. Double click My Computer and go to the drive letter where the memory drive is plugged in. Double click on that to open and the AVG update should show up. You have two choices now. Either install directly from the flash drive or copy the update to your computer if you have a file where you usually keep updates and then install. To install, double click the setup file and it will install on your computer.

I am wondering if this could be a run away log file. when you have a problem with hard drive space disappearing, look for a gigantic file. In Windows XP, open Windows Explorer (click Start, All Programs, Accessories, Windows Explorer). Click Search and All Files and Folders. Enter *.* in the file name. Tell it to search My Computer. Select Specify Size and pick At Least in the first box. Enter 1000000 in the second box. Click Search. We are looking for any really large files if you find something get the info on where it is and what it is. Also do this, click start, control panel, administrative tools, event viewer, there you will see 3 options double click on them one at a time and see if you have any warnings if you see anything unusual just double click on that entry and it will open a box with info and what the code is. In the security especially look closely for signs of any one other than you logging into your system. While in control panel open user accounts and look to see if you see any new or additional user accounts listed in there. do you have a firewall on your pc? if not at the very least get the windows one turned on but I would advise going and getting one of the free ones, and setting it up, just in case someone has gained access to your system. work with that program xinorbis it will tell you exactly where the big files are that is what it is for so you can see exactly what is taking up that space. It will make pie charts and lists and tell you a lot of info. Another thing to check is how much space are you allowing system restore to use? you can adjust the amount you let it have. Start, control panel, double click system click the system restore tab then settings if the slider is all the way on max move it down a bit hit apply ok, that might show you have some space back check and see. And just in case you have not done this already on your browsers clear all the cache, temp internet files, cookies, history, offline content, every thing. If you need directions just tell us. Go to your trash bin and make sure it is completely empty. do you have any type of peer to peer sharing programs on your pc? like sharing music of videos? If so lock them down and/ or get rid of them. Have you installed itunes by any chance and loaded music? sometimes it can duplicate files. you can download a free program called belarc advisor which will scan your pc and give you a list of everything that is on your pc, but it also has a function that will tell you if your hard drive is healthy or if may be failing, that would be something worth checking. I am just wracking my brain for things that could be causing this. But I tell ya I would be thinking of trying a system restore point prior to that date that you said it pointed to and see what happens before you no longer have the option to go back there. As I said if it does not help you can just turn right back around and tell it to undo it. To be doubly sure have it create a restore point right before you do the go back. Do that before you make any changes to your system restore like moving the slider to use less space, would not want to lose the restore point you needed. I will keep thinking on it as I am sure others are too.