I love this antivirus but yersterday when it downloaded the latest update (AVG 7.5.503 - AVI 269.15.30/1127) it started complaining about my XP SP2's user32.dll file having a trojan: This is a false alarm, as I know the user32.dll file was perfect and even more I compared it to the original on the CD with the FC command, matching both bit by bit. So I kept on clicking on the Ignore button every time AVG complained about this, and then I went to sleep. Today, I wake up, turn on the computer again and whala, I get this: STOP: c0000135 (unable to locate component) this application has failed to start because winsrv was not found. Re-installing the application may fix this problem... Ya, started on the parallel installation I have on the same disk, compared user32.dll again, this time against the one belonging to the XP SP2 I booted from the second partition, and they were still identical. So remembering yesterday's false alarm I went to C:\Program Files and renamed the folder Grisoft (where AVG Free is located). Booted again from the first OS and whala, antivirus is no more but Windows loads again flawlessly... Furthermore, now at another computer with XP SP2 I have experienced exactly this same problem after updating AVG. I'll see what Grisoft has to say about this, haven't found anything related on their website at the moment. The affected Windows is XP SP2 Spanish. The user32.dll file size is 578,048. If anyone else experiences this, let's hope not!, I leave here a small tip about my experience. EDIT: They haven't mentioned anything and I doubt they ever will, but there's a new update (AVI 269.15.31/1128) that fixes the false alarm and the blue screen during bootup. On a system with the Grisoft folder renamed, the best fix is to download and run the latest AVG installer and it will detect the damaged installation and repair it. Then apply the latest database update.