Why does Firefox opens C:\Program Files\Mozilla\Firefox... when i click on certain links. ??

== Issue == I have another kind of problem with Firefox == Description == When i open Firefox it starts normally but when i click on a link it opens another window C:\program files\mozilla firefox... Os: Windows 7 Ultimate w/ customized theme. CPU 3.0Gh, 1gb Ram, HD 180Gb. == This happened == Every time Firefox opened == After i installed add-on Fox -Tab == == Firefox version == 3.6.3 It Pops up a new window with 2 tabs with the following url, If i refresh the website the pop up window comes up again even if it's still there. 1: file:///C:/Program%20Files/Mozilla%20Firefox/ 2: file:///C:/Program%20Files/Mozilla%20Firefox/%C3%87%5D%E2%80%9C%C5%92a%C2%AF%C2%BB%1CSd%C2%A5%1BI+:*%1C%02%5B%C3%835-%C3%86%5E3%C3%B2+H%E2%80%A2%v.9K%C3%AB%E2%80%A6X_+4%C3%83%C3%8Cy%%05%C3%84%C3%9D%C3%B4q%C2%B7ZC@A%C3%83%C2%BB%C2%A5%C2%B9%C3%94%C3%BD%C2%B1p%C3%B3%C2%AE%16S%C2%A4+%17%C3%A4%03%C3%BE%C2%B8%C3%95yMt%C3%A0n%C2%B7%5EP:%3E%279%27%C3%A0%E2%80%9D%C3%90%5EI%C3%A1%C3%A2%15D%C3%B4%01%C5%BD%06%C2%AAX%12%C3%82V%E2%80%A1K%C2%A02~%C3%90d%C3%99K%C3%AD%277%C3%B0%E2%80%9AV9Z%C2%AD%C3%9C%C2%B7%20%C2%A9%C3%89%C3%921j%E2%80%99%01%C3%84%C5%BE%C2%A7%C2%A5%0F%C3%9Bd%1Ef1%C2%BBj%0B%C6%92l%C2%B1%5DP%C2%AEE)%7Bp%C2%BDm%7D%1BA%E2%80%98%15%02%C3%94%C3%8BDd;X%C3%88%C2%B5%C3%B3%C3%8D%C6%92%C3%99%E2%80%94%C3%A2%27,%C3%8D%C3%BF%08%13[U%20%C3%94%E2%80%9C%C3%9E%C2%BF%C3%92V%C2%A2