Comment 35 for bug 574910

Same issue here, but maybe some intresting additionals.

My note running 10.04 installed from CD (07.01), updated every time daily.
Configuration: Dell Latitude E5400 4GB RAM, 2.5Ghz CPU, 250 GB HDD, 2 pcs ext4 fs, running sweet without any high load issue...

This note has few installed Virtualbox Guests (WinXPsp3, and one Lucid) I use lucid to have separeted internet environment.
The LUCID VB guest configuration (actually installed 28/07 and updated az 29/07):
- 1 CPU, 1 Gig RAM (IO apic, HW timer, absolute pointing dev.) PAE/NX, VT-X, Mem-Virtualization enbaled
- 64 MB Video ram, 1 Screen, without any 3d or 2d accel.RDP enabled
- SATA disk controlled .vdi (8 GB size, ext4 fs, on 2 partition, and 512 Mb SWAP) and IDE CD-ROM controller
- Pulseaudio ICH AC97 enabled
- NO network and Serial
- USB enabled with USB 2.0 EHCI enabled (1 USB device HUAWEI HSDPA modem)
- no shared folder
So summa summarum, i found the issue on this guest machine.... I am currently happy with this state, and if i can help, just say...
regards,
SirFrankie