One of the identities may be damaged, especially if one is the default Main
Identity (or a Main Identity which you've renamed). Try one or more of your
accounts in a new Named Identity (File Identities Add new identity).
Assuming all is well, import messages from the old Identity before deleting
it (File Identities Manage Identities).

To avoid such corruption in futu

- Don't use Inbox or Sent Items to archive messages. Move them to local
folders created for this purpose.

- Empty Deleted Items folder daily.

- Disable Background Compacting [N/A in SP2] and frequently perform a manual
compact of all OE folders while "working offline". More at
http://insideoe.tomsterdam.com/files/maintain.htm.

- Do not attempt to close OE via Task Manager or shutdown your machine if
Automatic Compacting is taking place (WinXP SP2 only).

- Your anti-virus application's email scanning feature can also cause such
corruption. Disable it. It provides no additional protection.
--
~Robear Dyer (PA Bear)
MS MVP-Windows (IE/OE, Shell/User, Security), Aumha.org VSOP, DTS-L.org


Philip E. Cleary wrote:
OE has been acting strangely when I try to switch identities. I have two
identities set up, which I'll call #1 and #2. OE will open to identity #1.
But when I try to switch identities to #2, the OE window disappears as
normally, but the window with identity #2 never opens. Windows Task
Manager shows msimn.exe among the processes that are running. In order to
get to identity #2, I have to end the process in Task Manager and then
start OE again. It will then open with identity #2 and the message that
OE didn't shut down correctly.

I'm running XP Pro SP2.

Phil Cleary