Problems with the USB Ports

Question

Hi there,
I writing this because I'm having some really big problems with my USB ports.
A few days ago I plugged in an USB-Hub that was quite cheap. Suddenly a window popped up saying that a USB device was deactivated because it "needed" to much power. Since this happening, two of those windows keep popping up everytime I boot the MacBook. I called Apple and got some help: I had to delete some .plist files and clear some caches. The man who helped was able to find the error and deactivate the notification, he also told me to make a PRAM- and a SMC-reset. The man said that it's just a software problem and that I have to reinstall the system if we don't find a solution. So, one day later I reinstalled the system (Lion) and not only didn't it help, the two notification windows were popping up again...everytime I booted the Mac. So I decided to formate the whole hard drive and install Snow Leopard -> still the problem with the USB ports. After that I installed Lion  -> still the problem with the USB ports. I even tried to extract the .kext files that are important for the USB functionality from an earlier Combo Update, but it didn't help either. The point is, that the Mac doesn't recognize my external hard drive or any of my iDevices. Sometimes it recognizes USB sticks, but only after 20 seconds. The data transfer on both USB ports is also very slow. If I'm lucky and Mac recognizes one of my USB sticks, it takes like an hour for 1GB to be transfered on the USB stick or from the USB sticks to the Mac.
I really don't know what to do and need help, especially because my backup data is on my external hard drive which I can't access because of this problem.
I really hope that someone can help me, I'm very thankful for every answer that could help me!
PS: Sorry for my bad English, I hope that everyone understands what I mean, please tell me if you don't get what I'm trying to explain in the text above.
Sincerely,
iLoud
[UPDATE] I downloaded "USB Prober" and copied the Output file, maybe it helps:
Timestamp Lvl            Message
    0.698 [3]          AppleUSBHub[0x5076c00]::DecrementOutstandingIO(7316), outstandingIO(0), _interruptReadPending(false) - rearming read
    0.698 [3]          AppleUSBUHCI[0x4f97000]::UIMCreateInterruptTransfer - root hub interrupt transfer - clearing unneeded memDesc (0x5073080) from dmaCommand (0x506a100)
    0.735 [3]          AppleUSBUHCI[0x4f97000]::UIMAbortEndpoint - endpoint 1:1,1
    0.735 [3]          AppleUSBUHCI[0x4f97000]::RHAbortEndpoint - Interrupt pipe -  noting status change
    0.735 [3]          AppleUSBHub[0x5076c00]::InterruptReadHandler error kIOReturnAborted (expected)
    0.739 [2]          AppleUSBUHCI[0x4f97000]::HandleInterrupt - Host controller resume detected - calling EnsureUsability
    0.739 [2]          AppleUSBUHCI[0x4f97000]::HandleInterrupt - deferring further processing until we are running again
    0.761 [3]          AppleUSBHub[0x5076c00]::DecrementOutstandingIO(7320), outstandingIO(0), _interruptReadPending(false) - rearming read
    0.761 [3]          AppleUSBUHCI[0x4f97000]::UIMCreateInterruptTransfer - root hub interrupt transfer - clearing unneeded memDesc (0x5073080) from dmaCommand (0x506a100)
    0.798 [3]          AppleUSBUHCI[0x4f97000]::UIMAbortEndpoint - endpoint 1:1,1
    0.798 [3]          AppleUSBUHCI[0x4f97000]::RHAbortEndpoint - Interrupt pipe -  noting status change
    0.798 [3]          AppleUSBHub[0x5076c00]::InterruptReadHandler error kIOReturnAborted (expected)
    0.801 [2]          AppleUSBUHCI[0x4f97000]::HandleInterrupt - Host controller resume detected - calling EnsureUsability
    0.801 [2]          AppleUSBUHCI[0x4f97000]::HandleInterrupt - deferring further processing until we are running again
    0.823 [3]          AppleUSBHub[0x5076c00]::DecrementOutstandingIO(7324), outstandingIO(0), _interruptReadPending(false) - rearming read
    0.823 [3]          AppleUSBUHCI[0x4f97000]::UIMCreateInterruptTransfer - root hub interrupt transfer - clearing unneeded memDesc (0x5073080) from dmaCommand (0x506a100)
    0.860 [3]          AppleUSBUHCI[0x4f97000]::UIMAbortEndpoint - endpoint 1:1,1
    0.860 [3]          AppleUSBUHCI[0x4f97000]::RHAbortEndpoint - Interrupt pipe -  noting status change
    0.860 [3]          AppleUSBHub[0x5076c00]::InterruptReadHandler error kIOReturnAborted (expected)
    0.863 [2]          AppleUSBUHCI[0x4f97000]::HandleInterrupt - Host controller resume detected - calling EnsureUsability
    0.863 [2]          AppleUSBUHCI[0x4f97000]::HandleInterrupt - deferring further processing until we are running again
    0.885 [3]          AppleUSBHub[0x5076c00]::DecrementOutstandingIO(7328), outstandingIO(0), _interruptReadPending(false) - rearming read
    0.885 [3]          AppleUSBUHCI[0x4f97000]::UIMCreateInterruptTransfer - root hub interrupt transfer - clearing unneeded memDesc (0x5073080) from dmaCommand (0x506a100)
    0.922 [3]          AppleUSBUHCI[0x4f97000]::UIMAbortEndpoint - endpoint 1:1,1
    0.922 [3]          AppleUSBUHCI[0x4f97000]::RHAbortEndpoint - Interrupt pipe -  noting status change
    0.922 [3]          AppleUSBHub[0x5076c00]::InterruptReadHandler error kIOReturnAborted (expected)
    0.926 [2]          AppleUSBUHCI[0x4f97000]::HandleInterrupt - Host controller resume detected - calling EnsureUsability
    0.926 [2]          AppleUSBUHCI[0x4f97000]::HandleInterrupt - deferring further processing until we are running again
    0.947 [3]          AppleUSBHub[0x5076c00]::DecrementOutstandingIO(7332), outstandingIO(0), _interruptReadPending(false) - rearming read
    0.947 [3]          AppleUSBUHCI[0x4f97000]::UIMCreateInterruptTransfer - root hub interrupt transfer - clearing unneeded memDesc (0x5073080) from dmaCommand (0x506a100)
    0.984 [3]          AppleUSBUHCI[0x4f97000]::UIMAbortEndpoint - endpoint 1:1,1
    0.984 [3]          AppleUSBUHCI[0x4f97000]::RHAbortEndpoint - Interrupt pipe -  noting status change
    0.984 [3]          AppleUSBHub[0x5076c00]::InterruptReadHandler error kIOReturnAborted (expected)
    0.987 [2]          AppleUSBUHCI[0x4f97000]::HandleInterrupt - Host controller resume detected - calling EnsureUsability
    0.987 [2]          AppleUSBUHCI[0x4f97000]::HandleInterrupt - deferring further processing until we are running again
    1.009 [3]          AppleUSBHub[0x5076c00]::DecrementOutstandingIO(7336), outstandingIO(0), _interruptReadPending(false) - rearming read
    1.009 [3]          AppleUSBUHCI[0x4f97000]::UIMCreateInterruptTransfer - root hub interrupt transfer - clearing unneeded memDesc (0x5073080) from dmaCommand (0x506a100)
    1.045 [3]          AppleUSBUHCI[0x4f97000]::UIMAbortEndpoint - endpoint 1:1,1
    1.045 [3]          AppleUSBUHCI[0x4f97000]::RHAbortEndpoint - Interrupt pipe -  noting status change
    1.045 [3]          AppleUSBHub[0x5076c00]::InterruptReadHandler error kIOReturnAborted (expected)
    1.049 [2]          AppleUSBUHCI[0x4f97000]::HandleInterrupt - Host controller resume detected - calling EnsureUsability
    1.049 [2]          AppleUSBUHCI[0x4f97000]::HandleInterrupt - deferring further processing until we are running again
    1.071 [3]          AppleUSBHub[0x5076c00]::DecrementOutstandingIO(7340), outstandingIO(0), _interruptReadPending(false) - rearming read

Answer 1

Oh, sorry, I meant "I'm writing this...".