+ 0 Votes Check the Global Catalog? deetee2000 7 years ago Sounds like the DSAccess service can't talk to or find the local Global Catalog server? Have you one setup in the Sites and Services snap-in? If I remember correctly you'll have to configure ISA to allow AD queries if it is sitting in front of your Exchange server + 0 Votes Master Browser deetee2000 7 years ago That normally appears during a run of the mill network day. It's computers fighting with each other over who can publish a list of machines to the network neighbourhood and is outdated now that we have a AD/DNS infrastructure. Did you try looking at the GC? + 0 Votes SBS Churdoo 7 years ago Well the first problem is the dialup. Yes I've experienced dialup having performance issues of OWA, to the point of near impossibility. OWA is a heavy page, at least until the browser caches all of the little graphic icon images that OWA uses, and then it's not so bad. As for general OWA performance? SBS = AD Controller, DHCP, DNS, ISA, SQL, LMNOP (oops, got carried away), File and Print Services, Exchange, WWW including Sharepoint and OWA, etc., etc. I can't imagine why there may be performance issues. Seriously, I've noticed that the performance of all of the WWW components on SBS is not very snappy, and no wonder considering everything that SBS does. And don't get be wrong, I like SBS, but consider checking the resources of the server itself and possibly beefing that up. Your whole network will thank you. + 0 Votes black hole router sgt_shultz 7 years ago I suppose this is too far fetched but did you see this one: Diagnoses (sic) and treatment of black hole routers http://support.microsoft.com/kb/159211/en-us if this is a newer installation don't forget you might have some free MS support for it + 0 Votes anything in the event logs? sgt_shultz 7 years ago anything in the event logs on the sbs server?