I wonder if it is just co-incidence?
I just happened to look a thread titled 'HP Releases Linux Based Notebook' and noticed what seems to be a posssible concerted effort to stifle comments about potentially competing prodoucts.
Check this subthread: http://slashdot.org/comments.pl?sid=116705&cid=9875299.
It can be seen that every post that had a refernce to successes etc. with IBM Thinkpad notbooks were modded down as Troll (and in one case Redundant). If you read the comments, they are nowhere near being Trollish, neither in content or tone. They don't even deserve a Redundant or Offtopic mod because, in a discussion on laptops, it is quite important to look at the alternatives an in case of Linux, even more so, since we have to depend more on user experiences.
Have anyone else, noticed such behaviour on Slashdot? (putting aside the usual 'liberal media' and 'conservative media' junk.)