I use Thunderbird as an email client, and a POP3 connection to Virginmedia to download emails. This has worked pretty well for years. In the last few weeks the email content has been very slow to load. Although the list of emails in the inbox in Thunderbird appears quickly, when I select an email to view its content there is a delay of perhaps 5s while it says 'Loading Message...'. There is a similar delay when deleting a message. Once a message has been loaded, it can be re-visited without a delay, but if marked as unread there is again a delay next time it is read. This is also true if I work offline, so it can't be Virginmedia's server. I have another account using an IMAP connection which doesn't suffer from any delay. Thanks if anyone can advise.