Recording with firefox and flash

Hello,
I want record voice via a Flash plugin in Firefox, but that doesn't work. The Flash plugin is recording but if I playback that recording it's to fast (Mickey Mouse voice). I can play videos, DVD, CD and so on but if it comes to recording it failed.
With Gnome-Recorder it isn't a problem, that works fine. Therefore I conclude that firefox gets the wrong sound information but where can I configure that? I tried the man page but there is only one environment variable - FIREFOX_DSP. This variable is set to none (default setting). I tried the aoss package and set FIFEFOX_DSP=aoss but that doesn't work too.
The Site with which I want do that is www.livemocha.com, a language learning portal. That isn't for fun, I need it for business. If that isn't to fix I must switch back to M$ and I don't want that. It must be a solution there but I can't get it. I must miss something but what?

My System:
Ubuntu 7.10 (Gutsy Gibbon) fresh install (Dual boot with WXP)
Toshiba Satellite L30-140 (PSL033E)
BIOS-Version: 3.10 (latest)
Fixed DSDT - There is only one boot error:

[ 18.394713] ACPI: CPU0 (power states: C1[C1] C2[C2])
[ 18.394891] ACPI Exception (processor_core-0783): AE_NOT_FOUND, Processor Device is not present [20070126]

Sound - Chip: ALC660/ALC861VD
/etc/modprobe.d/alsa-base:
#
# Toshiba Satellite L30-140
# Chip ALC660/ALC861VD
options snd-hda-intel model=3stack position_fix=1 enable_msi=1

That's the only model which works with TS L30 hardware.
Sound summary: All works fine but headphones won't recognized (the HW switched off the speaker but on the headphone isn't any sound)

Firefox and flash are the actually packages from the repositories.

Following some information about my system:
$ sudo lspci
00:00.0 Host bridge: ATI Technologies Inc Unknown device 5a31 (rev 01)
00:01.0 PCI bridge: ATI Technologies Inc RS480 PCI Bridge
00:12.0 IDE interface: ATI Technologies Inc 4379 Serial ATA Controller (rev 80)
00:13.0 USB Controller: ATI Technologies Inc IXP SB400 USB Host Controller (rev 80)
00:13.1 USB Controller: ATI Technologies Inc IXP SB400 USB Host Controller (rev 80)
00:13.2 USB Controller: ATI Technologies Inc IXP SB400 USB2 Host Controller (rev 80)
00:14.0 SMBus: ATI Technologies Inc IXP SB400 SMBus Controller (rev 82)
00:14.1 IDE interface: ATI Technologies Inc Standard Dual Channel PCI IDE Controller (rev 80)
00:14.2 Audio device: ATI Technologies Inc SB450 HDA Audio (rev 01)
00:14.3 ISA bridge: ATI Technologies Inc IXP SB400 PCI-ISA Bridge (rev 80)
00:14.4 PCI bridge: ATI Technologies Inc IXP SB400 PCI-PCI Bridge (rev 80)
01:05.0 VGA compatible controller: ATI Technologies Inc RC410 [Radeon Xpress 200M]
09:01.0 CardBus bridge: ENE Technology Inc CB1410 Cardbus Controller (rev 01)
09:02.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
09:04.0 Ethernet controller: Atheros Communications, Inc. AR2413 802.11bg NIC (rev 01)

$ sudo lspci -vv -s 00:14.2
00:14.2 Audio device: ATI Technologies Inc SB450 HDA Audio (rev 01)
        Subsystem: Toshiba America Info Systems Unknown device ff31
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=slow >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 64, Cache Line Size: 32 bytes
        Interrupt: pin ? routed to IRQ 19
        Region 0: Memory at c0400000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: [50] Power Management version 2
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [60] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-
                Address: 0000000000000000 Data: 0000

$ sudo lsmod | grep snd
snd_hda_intel 263712 1
snd_pcm_oss 44672 0
snd_mixer_oss 17664 1 snd_pcm_oss
snd_pcm 80388 2 snd_hda_intel,snd_pcm_oss
snd_seq_dummy 4740 0
snd_seq_oss 33152 0
snd_seq_midi 9600 0
snd_rawmidi 25728 1 snd_seq_midi
snd_seq_midi_event 8448 2 snd_seq_oss,snd_seq_midi
snd_seq 53232 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
snd_timer 24324 2 snd_pcm,snd_seq
snd_seq_device 9228 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
snd 54660 11 snd_hda_intel,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
soundcore 8800 1 snd
snd_page_alloc 11400 2 snd_hda_intel,snd_pcm

$ asoundconf list
Names of available sound cards:
SB

$ amixer
Simple mixer control 'Headphone',0
  Capabilities: pswitch
  Playback channels: Front Left - Front Right
  Mono:
  Front Left: Playback [off]
  Front Right: Playback [off]
Simple mixer control 'PCM',0
  Capabilities: pvolume
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 255
  Mono:
  Front Left: Playback 255 [100%] [0.00dB]
  Front Right: Playback 255 [100%] [0.00dB]
Simple mixer control 'Front',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 64
  Mono:
  Front Left: Playback 50 [78%] [-14.00dB] [on]
  Front Right: Playback 50 [78%] [-14.00dB] [on]
Simple mixer control 'Front Mic',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Front Mic Boost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 0 [0%]
  Front Right: 0 [0%]
Simple mixer control 'Line',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'CD',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 25 [81%] [3.00dB] [on]
  Front Right: Playback 25 [81%] [3.00dB] [on]
Simple mixer control 'Mic',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Mic Boost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 0 [0%]
  Front Right: 0 [0%]
Simple mixer control 'PC Speaker',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 3 [10%] [-30.00dB] [on]
  Front Right: Playback 3 [10%] [-30.00dB] [on]
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 31
  Front Left: Capture 25 [81%] [24.00dB] [on]
  Front Right: Capture 25 [81%] [24.00dB] [on]
Simple mixer control 'Caller ID',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'Digital',0
  Capabilities: cvolume
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 120
  Front Left: Capture 99 [82%] [19.50dB]
  Front Right: Capture 99 [82%] [19.50dB]
Simple mixer control 'Input Source',0
  Capabilities: enum
  Items: 'Mic' 'Front Mic' 'Line' 'CD'
  Item0: 'Mic'
Simple mixer control 'Off-hook',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [off]

I really hope that there is some who can help me to fix this. After over 10 years Linux usage I'm at a point where I have really no idea what's going on.

Thanks in advance.

MrCanis