Anyone heard of/experienced a shaky display in outlook 2003 only?

For the last month or so, Outlook 2003 screen display starts to shake and more…but only in Outlook and it starts faster when going into Contacts. McFee and Norton can’t find anything, screens work fine (checked with 2 screens both working fine on other PCs). Have Windows XP, Office 2003 and have updated drivers and checked the system in general.
Anyone had this?