Radware lowered their earnings guidance for calendar Q1 by about 10% over the weekend.  In the release they cite the change over in their US operations that was discussed in this previous entry and say that they will discuss it in greater detail on their earnings call.

RDWR had been trading between $20-$22 for all of March until Friday where it started the day just over $20 and closed at $17.63.  Then on Sunday they officially pre-announce.  Interesting post on the subject that "makes you go hmmmm..."