Looks to be another one.
Same sort of symptoms. Clicked an "external" link (from an "HTML aware" text editor). URL is shown on Location Bar, but status shows "Stopped", & page never loads.
At the end of the day today, I noticed that I had a hung SeaMonkey 
processess, so that 
may have contributed to what I saw.  But then I don't know 
when it manifested itself?  Could have been there a for a long time (days)?  Didn't think at the time to see if it was a SeaMonkey 1 or SeaMonkey 2 seamonkey.exe.  If it were a 2, then it wouldn't have mattered cause I was running 1.
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This was NoScript 1.9.4.6, SeaMonkey 2, Intel, from the 23rd.
Wasn't doing a whole lot.  Memory was manageable, 218MB, spikes still there about 8% but seemed inconsequential.
http://i40.tinypic.com/df927p.jpg
Then as I was closing down windows, memory dropped to 167MB, spikes still there but to a lessor degree, around 5%.
http://i39.tinypic.com/33a5ow6.jpg
No surprises (& without really pushing SeaMonkey 2 yet) I have to say my earlier issues (not releasing memory) seem resolved at the 1.9.4.6 level.
 
			
			
									
						
							Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.19) Gecko/20110420 SeaMonkey/2.0.14 Pinball NoScript FlashGot AdblockPlus
			                        Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1pre) Gecko/20090617 SeaMonkey/2.0b1pre