Hy,
okay I`m a boon but here are some tips (please ghost you`re box before

):
- Update to 7.0.3
- Clear C:\windows\Temp
- Clear C:\Windows\Prefetch
- Compress and reindex DB`s
- Fix Up DB`s
- Stop unesceserry services (Help, Wirless, ...)
- Defragemnt C:
- Delet logs (LO No, Windows, Berry)
- Check the Network (Maybe a Half / Duplex Issue)
- Reset the polling time in the BES Manager
- Install all Windows Updates