Very large oversized drwtsn32 log (20gb!)

Hi guys, i'm taking a look at a friend's computer and I discovered that 2/3 of her hard drive is taken up by this drwtsn32.txt file.
full path: C:\Documents and Settings\All Users\Application Data\Microsoft\Dr Watson

This file is literally 20 gigabytes large. With some googling I found out that it's a log file for the error catching program Dr. Watson, but from what I see it's definitely abnormal for it to be so large. So my questions are:

Can I simply delete the file without repercussions?

Do you have any idea what could have caused it to grow so large?

Could this be a malware issue or an issue with the Dr. Watson process itself?

by the way this is a Dell Inspiron 6000 running windows XP home edition SP2

 

Thx but the .dmp files are not the problem. The 20 gigabyte file is
C:\Documents and Settings\All Users\Application Data\Microsoft\Dr Watson\drwtsn32.log

 

I've never come across, or even heard of a text file that's 20GB, WOW!


As a precaution, pay a visit to the MalWare Removal forum and follow the recommendations in the stickies to rule out infection.

 

Running CCleaner with default settings removed the oversized log. The rest of the malware scan didn't pick up much of anything. I still have no idea why the log got so large but at least it's gone now.