Paypal investigation - any advice?

I was wondering if anyone had any advice or can answer any of my questions. Thanks!
About a month ago, someone bought an item from me on ebay. The total amount is about $30. He paid me by paypal, via a credit card I believe. He had a confirmed address, so I shipped the item with usps delivery confirmation, which I provided to paypal when I shipped the item. He received it, left me positive feedback, and I did the same.
I have checked usps and it showed that my packaged was delivered.
However, today I check my email and find a legit email from paypal saying that they have opened an investigation into this transaction and have placed the funds associated with this transaction on hold. So I when logged into my paypal account, my balance was in the negative (-$30), since I have long ago tranfered the funds to my bank account.
Anyway, I believe that this investigation was started by the paypal and not the buyer (but I could be wrong). When I clicked on the resolution center, the reason given for this investigation is "inquiry by paypal" One reason I believe this investigation started is that, according to this buyer's feedback, he either failed to pay some other ebay sellers or had the payments reversed on them. One of the alleged "unpaid" transactions was for $129. So I think paypal is investigating the payments (or lack there of) that this buyer made to the those sellers and also investigating the payments this buyer made, which leads to my transaction.
I have been selling on ebay for the past 5-6 years. I have taken several percautions, including shipping (mostly) to confirmed addresses, using delivery confirmation, etc... I've never experience this before although I believed, due to the law averages, that I would encounter a situation like this one day. Sure I've had some troublesome buyers, but I've always managed to resolve any issues on my own, even refunding some money in certain cases.
Anyway, if any of you have had similar experiences, I was wondering if you can answer my questions.
1) About how long will be investigation last? Ballpark estimate?
2) Will this affect my future ebay-paypal transactions? - I have several items ending today in fact. Will I still be able to transfer funds to my bank account?
Thanks for any advice/comments. I have searched through the ebay guides and am now in the process of reading the info on paypalsucks.com, but there's a lot of stuff to look through.
About a month ago, someone bought an item from me on ebay. The total amount is about $30. He paid me by paypal, via a credit card I believe. He had a confirmed address, so I shipped the item with usps delivery confirmation, which I provided to paypal when I shipped the item. He received it, left me positive feedback, and I did the same.
I have checked usps and it showed that my packaged was delivered.
However, today I check my email and find a legit email from paypal saying that they have opened an investigation into this transaction and have placed the funds associated with this transaction on hold. So I when logged into my paypal account, my balance was in the negative (-$30), since I have long ago tranfered the funds to my bank account.
Anyway, I believe that this investigation was started by the paypal and not the buyer (but I could be wrong). When I clicked on the resolution center, the reason given for this investigation is "inquiry by paypal" One reason I believe this investigation started is that, according to this buyer's feedback, he either failed to pay some other ebay sellers or had the payments reversed on them. One of the alleged "unpaid" transactions was for $129. So I think paypal is investigating the payments (or lack there of) that this buyer made to the those sellers and also investigating the payments this buyer made, which leads to my transaction.
I have been selling on ebay for the past 5-6 years. I have taken several percautions, including shipping (mostly) to confirmed addresses, using delivery confirmation, etc... I've never experience this before although I believed, due to the law averages, that I would encounter a situation like this one day. Sure I've had some troublesome buyers, but I've always managed to resolve any issues on my own, even refunding some money in certain cases.
Anyway, if any of you have had similar experiences, I was wondering if you can answer my questions.
1) About how long will be investigation last? Ballpark estimate?
2) Will this affect my future ebay-paypal transactions? - I have several items ending today in fact. Will I still be able to transfer funds to my bank account?
Thanks for any advice/comments. I have searched through the ebay guides and am now in the process of reading the info on paypalsucks.com, but there's a lot of stuff to look through.