Here are some of the disadvantages of an IRA rollover:
Rollovers from company or Keogh plans may take away your spouse's right to share in plan assets.
IRAs can't claim the limited tax relief allowed on lump-sum distributions.
To avoid tax hassles, rollovers should be done between the trustees of the plans involved. In other words, the check should not be made out to you personally, but to the trustee of the rollover account.