I would, too. All I can think of is that she was considered a bit of a centrist, especially on nat'l sec and has supported Bush on that; and Pelosi dislikes her (my guess is that Boxer and Hill do, too). Though, I believe her change started after she won the primary (IIRC it was a harder fight than expected).
A couple of possibilities for Pelosi and others disliking her:
Her name was supposedly on the list as a possible for Nat'l Intelligence Director:
http://www.freerepublic.com/focus/f-news/1296926/posts
She was mentioned as a possible candidate for Sen when DiFi retires:
Harman positioned to run statewide (DiFi's successor?)
The Hill ^ | 10/21/05 | Peter Savodnik
Posted on 10/21/2005 10:16:51 AM PDT by NormsRevenge
Rep. Jane Harman (D-Calif.) insists she has no plans to run statewide anytime soon, but it’s conventional wisdom in Washington and California that her centrist voting record and leadership spot on the Permanent Select Committee on Intelligence make her a prime candidate to succeed Sen. Dianne Feinstein (D-Calif.).
http://www.freerepublic.com/focus/f-news/1506729/posts
Democrat Harman defends Bush (program essential to security, disclosure damaged intelligence)
NewsBusters ^ | December 21, 2005 | Brent Baker
Posted on 12/21/2005 7:45:35 PM PST by Names Ash Housewares
http://www.freerepublic.com/focus/f-news/1545140/posts
re: Harmon
Remember this one?
Jane Harmon: NY Times Should be Prosecuted
http://209.157.64.201/focus/f-news/1577083/posts
I do not like Jane Harman...but, before she found out she was going to be in trouble for telling the truth..
SHE did admit that the programs that the NSA and others were doing, were good ones, and that they were helping..and I think she even indicated that they were lawful.
When she turned, she forgot that we have memories, I guess.
I hope that when the inevitable hearings about the NSA program happen...that her quotes from when it was first LEAKED are brought out in testimony from OUR side.