Drive filling with Shockwave files

Yesterday I received a call from a client because she had run out of disk space. She had 4Mb left on a 40Gb drive which was hard for me to understand how this could happen. Total space programs and files had ever taken up was 12Gb. I had her open My Computer and look for anything obvious which she then mentioned she had a bunch of Shockwave files on the c: drive. I didn't know what to make of that over the phone so I had her search for *.tmp files and delete any that came up, then delete cookies and internet files, which there weren't many because she doesn't use this computer to browse the internet, only receive email. She said after deleting these files she still only had 58Mb of space and still couldn't save the file she was working on. The machine she is using is a Dell 2.4GHz Intel Pentium, 40Gb drive, 512Mb memory running XP Professional.

Last week I had just run maintenance on the machine, Adaware, Spybot, Spywareblaster and McAfee as well as a defrag. I was puzzeled. I went into the office to take a look at the machine and as soon as I opened My Computer I saw what she was talking about with all these ShockWave files on the root of c: dated April 24, 2006. There were 80+ files all over 5Mb each some as big as 20-30Mb. We have no idea where these came from. All she runs on this machine is engraving software and Corel 12.

Is there a virus out there that does this making the drive full and inoperable? I didn't see any programs running that were out of the ordinary. All I can think of is my son may have been playing on the computer when he was in the office with my husband over the weekend and may have caused these to be created, but I don't understand how the date could have been yesterday when he was there on April 22, 2006.

Any ideas to keep this from happening again would be greatly appreciated as well as any comments, questions or advice. Thanks in advance for your assistance.

 

I deleted the Shockwave files and we had 25Gb back available.

I did mention that this employee does not browse the internet from this machine.

I just want to know where these Shockwave files came from if she wasn't doing anything out of the ordinary than running the engraving software and Corel12? I don't want this to happen again with the drive filling up.

What is out there that would have created all of these large files on the c: drive like that?