On Trojan.Gletta.A, I have SpywareGuard/Blaster, Spybot and TrojanHunter installed, alongside Zone Alarm and AVG anti-virus software.
Admittedly, while ZA and AVG were installed from day one the rest went in after the infection hijacked my IE homepage. At that point I started using Mozilla as my sole browser as a precaution.
All scans by these anti-malware products have always been negative but that didn't give me back my IE homepage which keeps reverting to MSN regardless. I tried HijackThis! in order to recover my browser homepage (which used to be the BBC before the hijack after which it always reverted to msn no matter what!).
I confess I'm a bit concerned about the possibility of a spyware trojan operated by criminals but Trojan.Gletta.A was first reported in June 2004 and I find it difficult to believe it would not have been picked up by one of the proprietary packeages I use to regularly scan all files. But these things happen, I guess.
These are the lines that appear in the first log file I made which are not on the other lists which appear in Hijack this and which I assume have been deleted by me.
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext =
http://www.euro.dell.com/
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: DriveLetterAccess - {5CA3D70E-1895-11CF-8E15-001234567890} - C:\WINDOWS\system32\dla\tfswshx.dll
O3 - Toolbar: (no name) - {BA52B914-B692-46c4-B683-905236F6F655} - (no file)
O4 - HKLM\..\Run: [ATIPTA] C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [DVDLauncher] "C:\Program Files\CyberLink\PowerDVD\DVDLauncher.exe"
O4 - HKLM\..\Run: [dla] C:\WINDOWS\system32\dla\tfswctrl.exe
O23 - Service: dlbu_device - Dell - C:\WINDOWS\system32\dlbucoms.exe
O23 - Service: Iap - Dell Inc - C:\Program Files\Dell\OpenManage\Client\Iap.exe
These are the lost boys!