DFWP slow - EnsureListItemsData

I have a webpart page that has a single Data Form Webpart that is very slow. Appears from Developer Dashboard that the webpart is causing several (long executing) EnsureListItemsData calls. I am assuming that I have some DB issue - but am not sure how to debug further - any help is appreciated! This site was a SP2007 site that was migrated to SP2010. Developer Dashboard info:

BeginRequestHandler (0.04 ms)

◦PostAuthenticateRequestHandler (0.06 ms)

◦PostResolveRequestCacheHandler (16.91 ms)

◾GetWebPartPageContent (15.75 ms)

◾GetFileAndMetaInfo (15.48 ms)

◦GetWebPartPageContent (23.41 ms)

◾GetFileAndMetaInfo (23.25 ms)

◦EnsureListItemsData (48.83 ms)

◦PortalSiteMapDataSource: Determining Starting Node (0.02 ms)

◦PortalSiteMapDataSource: Determining Starting Node#1 (0.01 ms)

◦Add WebParts (18.48 ms)

◾New Service Ticket (0.16 ms)

◾Newly Assigned Service Tickets (18.06 ms)

◦ToolBarMenuButton.CreateChildControls for SiteActions (0.56 ms)

◦ToolBarMenuButton.CreateChildControls for PersonalActions (0.09 ms)

◦SearchBoxEx.OnLoad (0.33 ms)

◾SearchBoxEx.HandleContextualScoping (0.14 ms)

◾SearchBoxEx.GetSpWeb (0.01 ms)

◦Activate web part connections (0.03 ms)

◦DataBinding DataFormWebPart (Newly Assigned Service Tickets) (41.40 ms)

◾EnsureListItemsData (31.89 ms)

◦EnsureListItemsData#1 (1523.61 ms)

◦EnsureListItemsData#2 (1214.19 ms)

◦EnsureListItemsData#3 (1134.38 ms)

◦EnsureListItemsData#4 (1251.88 ms)

◦EnsureListItemsData#5 (1199.81 ms)

◦EnsureListItemsData#6 (1183.24 ms)

◦EnsureListItemsData#7 (1225.59 ms)

◦EnsureListItemsData#8 (1224.11 ms)

◦PortalSiteMapNode: Populating navigation children for web: /APPS/SD (18.91 ms)

◦PortalSiteMapNode: Populating navigation children for web: /APPS/SD#1 (1.95 ms)

◦Render Ribbon. (2.69 ms)

◦Render WebPart Zone Left (0.58 ms)

◾Render WebPart New Service Ticket (0.10 ms)

◾Render WebPart Newly Assigned Service Tickets (0.33 ms)

Database Queries from Developer Dashboard:

proc_FetchDocForHttpGet 15.01 ms

proc_FetchDocForHttpGet 11.75 ms

SELECT t1.[TimeCreated] 45.46 ms

proc_GetCurrent 2.82 ms

proc_GetTpWebMetaDataAndListMetaData 6.08 ms

proc_SecRefreshToken 43.42 ms

proc_GetTpWebMetaDataAndListMetaData 6.13 ms

proc_SecRefreshToken 3.63 ms

proc_GetChanges 3.28 ms

proc_GetListWebParts 12.67 ms

proc_GetListMetaDataAndEventReceivers 6.27 ms

DECLARE @DocParentIdForRF 12.86 ms

SELECT t23.[ntext4], 1520.41 ms

SELECT t23.[ntext4], 1210.92 ms

SELECT t23.[ntext4], 1129.92 ms

SELECT t23.[ntext4], 1247.78 ms

SELECT t23.[ntext4], 1196.30 ms

SELECT t23.[ntext4], 1178.67 ms

SELECT t23.[ntext4], 1220.98 ms

SELECT t23.[ntext4], 1219.56 ms

proc_GetTpWebMetaDataAndListMetaData 7.01 ms

proc_SecRefreshToken 3.77 ms

proc_GetWebNavStruct 6.05 ms