I'm running a Compaq Presario V5000 with Windows XP Home SP3 x86 system.
On Tuesday, July 11th, 2013, Microsoft rolled out about 14 new updates and all were installed except one: KB 2833941.
I tried several times to update without avail and now I've had 2 - 3 blue screens one of which was in safe mode (I wasn't attempting to update in safe mode, only gather information).
Also, possibly related (?), my machine's behavior has been very strange and that happened about a week prior to these new updates. The behavior is a sluggish machine and it almost looks like my mouse has been taken over or that I'm in some connection with another person remotely. The mouse's 'fluency' is sluggish like it looks when you have some tech person helping you remotely. It doesn't happen all the time but it has happened enough and it seems to have increased. So there might be something there.
My antispyware (SUPER Antispyware Pro or MBAB Pro) detected and supposedly removed a trojan recently -- I believe it was called "Droppler" or "Doppler" or something along these lines.
I run Comodo Antivirus, too, which seems to be working and updating fine.
Any suggestions and assistance is appreciated.
Ref: Windows XP Security Update for Microsoft .NET Framework 1.1 SP1 on Windows XP, Windows Vista, and Windows Server 2008 x86 (KB2833941)