Version:           1.12.4 (using KDE 4.3.4)
OS:                Linux
Installed from:    Fedora RPMs

When (for example) deleting a lots of emails you select using shift+left click, selected are right emails, but when you do this again (without doing anything else), wrong emails are selected for second time.

how reproducible:
always

steps to reproduce:
1) open some imap folder (not tested with pop3, but it should "work" too) with enough emails
2) click on 5th email
3) shift-click on 10th email
-> emails 5.- 10. are selected, as expected
4) press delete to remove them
-> emails are deleted, now 5. email is selected (11. originally)
5) shift-click on 10. email
-> emails 5,10,11 are selected and this is wrong

when you delete much more emails it's difficult to spot you've selected wrong emails and you can accidentally delete them this way