D'autres raisons provoquant la lenteur de OE, trouvées ici :
http://insideoe.tomsterdam.com/ Excellent site sur OE, fait par un MVP (most valuable professional, bénévole aidant sur les newsgroups MS)
There are several different problems that can affect performance in OE. Many of them display very similar symptoms. If your are experiencing slow performance, begin with the problem here that best describes the symptoms you are seeing. It is possible that you have more than one issue to resolve to get OE back in top shape.
* {OE very slow when starting, but everything else normal}
* {OE very slow when starting, and Internet Explorer forms slow}
* {OE very slow when working in a news account}
* {OE slow to open, slow to switch mail folders, slow in everything}
* {OE gradually slows down}
* {OE won't even start}
OE very slow when starting, and Internet Explorer forms slow
This is an indication of missing or corrupt settings or files for the Protected Storage Service. This is a Windows service that allows you to save passwords for your Identities. This MS Knowledge Base article describes the problem and gives several possible solutions:
{Q251787 - Delayed Response When Editing Internet Explorer Forms and Outlook Express May Take a Long Time to Start}
If the suggestions in the KB article do not solve the problem, you might also need to {replace the Protected Storage files}.
OE slow to open, slow to switch mail folders, slow in everything
This could be caused by a bloated Folders.dbx file. {Compact your folders} to see if performance improves. If not, run Scan Disk followed by Disk Defragmenter. If performance is still slow, rename or delete Folders.dbx. Please {read the consequences} of doing this first.
Another possible source is a corrupt or missing Protected Storage Service.
Replace the Protected Storage Service (Pstore)
OE gradually slows down
This is almost always a sign of folders in need of compaction and/or a defragmented disk. Clean up your newsgroups, compact your folders, then run Disk Defragmenter (Start| Programs| Accessories| System Tools).
Si vous ne pigez pas l'anglais, il faut compacter les dossiers car OE, comme les bases de données, ne suppriment pas réellement les messages, ils sont marqués "supprimés" mais la place disque n'est pas réduite. On pourrait donc avoir un folders.dbx de 10 MB mais aucun message dans la boîte de réception.
Pour compacter : menu "Fichier" -> "Dossier" -> "Compacter tous les dossiers".
Avant de le faire, jetez un oeil sur la taille des fichiers .dbx pour voir si ça vaut la peine.