Little things -- like ATI Technologies (ATYT) -- keep throwing the market for a loop. This company makes chips that improve computer graphics. We thought that business was red-hot. Lots of people were playing this graphics trend through ATI.

It may be. But it can't get the components it needs to hit its revenue targets.

Ouch! That's what knocked

Solectron

(SLR)

down. That's what worried some on the

Cisco

(CSCO) - Get Report

call. (I think Cisco has enough clout to get what it needs, but people sold the stock on this news.)

So when component shortages caused by business being too hot start hurting both top and bottom lines of computer companies, people shoot a whole slew of companies and ask questions later.

That's what is happening right now. Makes a tough sector even tougher.

Random musings:

We think

Costco

(COST) - Get Report

can be owned for a trade after this whacking. But we hope to exit above 30.

Also, this ramp in

UnitedHealth Group

(UNH) - Get Report

is amazing and is part-and-parcel with

the slowdown thesis.

James J. Cramer is manager of a hedge fund and co-founder of TheStreet.com. At time of publication, his fund was long Costco and Cisco. His fund often buys and sells securities that are the subject of his columns, both before and after the columns are published, and the positions that his fund takes may change at any time. Under no circumstances does the information in this column represent a recommendation to buy or sell stocks. Cramer's writings provide insights into the dynamics of money management and are not a solicitation for transactions. While he cannot provide investment advice or recommendations, he invites you to comment on his column at

jjcletters@thestreet.com.